School and pregnancy...

Strawsee
I am a full time student and can't afford to take a semester off right now. I'm about 7 weeks and CONSTANTLY dizzy and nauseous. Plus exhausted all the time even with sleeping 10 hours a day. Especially in the mornings. The semester starts tomorrow and I'm super nervous that I'm not going to be able to sit through my classes without having to get up and go to the bathroom. They are early morning classes (7:30 Monday through Thursday). Does anyone have any tips on going to school and being pregnant? Especially in the first trimester with all the morning sickness and fatigue. Any suggestions would be fabulous.