Sleep problem

I have not been sleeping good nowadays. my OB told me that is normal to experience this way. Hubby is getting so concerned because I only slept a couple of hours each night. I just can't get back to sleep after each time I woke up in the midde of the night to go the the bathroom. Tomorrow is my doctor's appointment and hubby's going to ask what medication the doctor can precribe for me to sleep better at night. As for me, I don't want to take any medication as much as possible because I am scared it might affect my baby's health.