I just started school this week (Monday), but ever since the first day of class I haven't been able to fall asleep. AT ALL! This has never happened to me before. I do suffer from mild anxiety and depression, and am on mediation for both (citalopram). I would say I'm relatively healthy; I eat well and exercise daily. School itself never really stresses me out, but I haven't ruled it out as a possibility to my sleeping problem. Is there a limit to the number of days one can go without sleep before they die? I'm really concerned that it'll finally catch up to me one of these days and I'll collapse and die. Are there any good medications out there you would recommend? Please help. Thank you.