Nausea

Does anyone else have problems with morning sickness and it happen mostly at night? I have it every morning when I wake up and every night before I go to bed. It also seems to happen when I stay up past my usual sleep schedule. Finals is this week trying to study and seems everytime if it's past midnight I can't stop throwing up. Anyone having this problem? I know simply go to bed early might help but only pushing myself for this week of finals.