I think you'd really benefit from speaking with someone. Losing a baby is a pain that you're not alone in, and it sounds like you're still really upset about it (rightfully so). But it doesn't quite sounds like you've made peace with it yet and I think that's a really important step to take before trying for another baby. Getting pregnant to fill that void and to make yourself happy isn't a good reason and you might find yourself regretting it. I know you want a baby, and there is nothing wrong with that, but you should want a baby because you want a baby, not to fix yourself.
I our you understand what I'm trying to say. I don't want to come off rude or anything, because I totally get the baby jealousy and wanting I've, I do. But I also know how hard it is at 20, and I think if you're going to plan it you should try and be in a healthy state of mind. I hope everything works out for your! Good luck (:
I know exactly how u feel I use to feel the same way