On the subject of Hell, a few Lewis quotes might be useful. I was reading Lewis a few days ago, and they strike me as relevant. The first is from The Great Divorce, and can be found here:
http://www.merelewis.com/CSLgd0Xwhatsomepeoplesay.html, though I'll quote it here in case the link stops working:
'.... What some people say on earth is that the final loss of one soul gives the lie to all the joy of those who are saved.'
'Ye see it does not.'
'I feel in a way that it ought to.'
'That sounds very merciful: but see what lurks behind it.'
'What?'
'The demand of the loveless and the self-imprisoned that they should be allowed to blackmail the universe: that till they consent to be happy (on their own terms) no one else shall taste joy: that theirs' should be the final power; that Hell should be able to veto Heaven.'
'I don't know what I want, Sir.'
'Son, son, it must be one way or the other. Either the day must come when joy prevails and all the makers of misery are no longer able to infect it: or else for ever and ever the makers of misery can destroy in others the happiness they reject for themselves. I know it has a grand sound to say ye'll accept no salvation which leaves even one creature in the dark outside. But watch that sophistry or ye'll make a Dog in a Manger the tyrant of the universe.'
'But dare one say—it is horrible to say—that Pity must ever die?'
'Ye must distinguish. The action of Pity will live for ever: but the passion of Pity will not. The passion of pity, the pity we merely suffer, the ache that draws men to concede what should not be conceded and to flatter when they should speak truth, the pity that has cheated many a woman out of her virginity and many a statesman out of his honesty—that will die. It was used as a weapon by bad men against good ones: their weapon will be broken.'
'And what is the other kind—the action?'
'It's a weapon on the other side. It leaps quicker than light from the highest place to the lowest to bring healing and joy, whatever the cost to itself. It changes darkness into light and evil into good. But it will not, at the cunning tears of Hell, impose on good the tyranny of evil. Every disease that submits to a cure shall be cured: but we will not call blue yellow to please those who insist on still having jaundice, nor make a midden of the world's garden for the sake of some who cannot abide the smell of roses.'
The second can be reached here, and comes from Mere Christianity:
http://www.merelewis.com/CSLpp08x.html
Again, I'll reproduce it in case the link doesn't work:
'IN AN earlier chapter it was admitted that the pain which alone could rouse the bad man to a knowledge that all was not well, might also lead to a final and unrepented rebellion. And it has been admitted throughout that man has free will and that all gifts to him are therefore two-edged. From these premises it follows directly that the Divine labour to redeem the world cannot be certain of succeeding as regards every individual soul. Some will not be redeemed. [The doctrine of Hell] .... has the full support of Scripture and, specially, of Our Lord's own words; it has always been held by Christendom; and it has the support of reason. If a game is played, it must be possible to lose it. If the happiness of a creature lies in self-surrender, no one can make that surrender but himself (though many can help him to make it) and he may refuse. I would pay any price to be able to say truthfully "All will be saved." But my reason retorts, "Without their will, or with it?" If I say "Without their will" I at once perceive a contradiction; how can the supreme voluntary act of self-surrender be involuntary If I say "With their will," my reason replies "How if they will not give in?"
... As things are, however, this doctrine is one of the chief grounds on which Christianity is attacked as barbarous and the goodness of God impugned. We are told that it is a detestable doctrine—and indeed, I too detest it from the bottom of my heart—and are reminded of the tragedies in human life which have come from believing it. Of the other tragedies which come from not believing it we are told less. For these reasons, and these alone, it becomes necessary to discuss the matter.
The problem is not simply that of a God who consigns some of His creatures to final ruin. .... Christianity, true, as always, to the complexity of the real, presents us with something knottier and more ambiguous—a God so full of mercy that He becomes man and dies by torture to avert that final ruin from His creatures, and who yet, where that heroic remedy fails, seems unwilling, or even unable, to arrest the ruin by an act of mere power. I said glibly a moment ago that I would pay "any price" to remove this doctrine. I lied. I could not pay one-thousandth part of the price that God has already paid to remove the fact. And here is the real problem: so much mercy, yet still there is Hell.
.... but hell was not made for men. It is in no sense parallel to heaven....
Finally, it is objected that the ultimate loss of a single soul means the defeat of omnipotence. And so it does. In creating beings with free will, omnipotence from the outset submits to the possibility of such defeat. What you call defeat, I call miracle: for to make things which are not Itself, and thus to become, in a sense, capable of being resisted by its own handiwork, is the most astonishing and unimaginable of all the feats we attribute to the Deity. I willingly believe that the damned are, in one sense, successful, rebels to the end; that the doors of hell are locked on the inside. I do not mean that the ghosts may not wish to come out of hell, in the vague fashion wherein an envious man "wishes" to be happy: but they certainly do not will even the first preliminary stages of that self-abandonment through which alone the soul can reach any good. They enjoy forever the horrible freedom they have demanded, and are therefore self-enslaved ....
In the long run the answer to all those who object to the doctrine of hell is itself a Question: "What are you asking God to do?" To wipe out their past sins and, at all costs, to give them a fresh start, smoothing every difficulty and offering every miraculous help? But He has done so, on Calvary. To forgive them! They will not be forgiven. To leave them alone? Alas, I am afraid that is what He does.
... He has his wish—to live wholly in the self and to make the best of what he finds there. And what he finds there is Hell.
... In all discussions of hell we should keep steadily before our eyes the possible damnation, not of our enemies nor our friends (since both these disturb the reason) but of ourselves. This chapter is not about your wife or son, nor about Nero or Judas Iscariot; it is about you and me.'
Does that help at all?
“The Christian ideal has not been tried and found wanting; it has been found difficult and left untried.” -G.K. Chesterton
So, what's there to do? I think you should seek counseling. Christian counseling if possible. It would be good to avoid antidepressants if possible - those are used when there is a chemical imbalance, i.e. when you're depressed for no reason. You are depressed for a good reason - you don't feel happy and fulfilled. It would be great if you could make a positive change in your life, like a new, interesting job, a hobby or a boyfriend. 
