What should i do?

wow. i don't know if i completely understand or not, but it seems like you've been pushing yourself really hard and have gotten over-stressed. i almost think you need a mini-vacation. if that's not possible, i feel like you need to spend 2-4 days (maybe including the weekend) to sleep, veg out, mediatate, pray, watch tv, talk on the phone and eat healthy foods. don't study during this time - pretend you are in a rehabilitation center.