I dont know if I will make it tonight

For the last week my bedtime has been between the 6pm and 7pm hour, with me climbing in bed at around 530pm. I either watch a movie with Matt and Zack or have them play in my room so I can at least pretend Im participating. Tonight will be rough. Im scheduled my first evening shift since August..... 3pm to 9pm. With me getting home at 945pm. Thats 3 hours past my bedtime. I will also have to get up at 530am for work tomorrow. Im very worried about driving home... I seriously can not keep my eyes open once 630pm hits, besides I can not eat past 5pm due to not feeling well. Apparently all these exhaustion and nausea side effects are amplified by the prometrium I am taking. (Its the extra progesterone he prescribed until my labs come back to make sure I dont loose the pregnancy from low levels.) Which sucks because if my prog. was low I have to take this rx until 10wks. Which means 6 o'clock bedtime until 10 wks.... I havent got a call so I will probably find out Thursday at my ultrasound. My other fear..... My Tuesday night Anatomy and Physiology Lab it starts at 8pm and goes until 950pm which means I dont get home until 1045!!! That will suck. That starts next week.