Sleeping Aid..

K
Is there anything (over the counter) that has been OKed by anyone's physicians to help with getting some sleep? Just curious.. 
I cannot get comfortable & cannot get just ONE nights rest. 
I'm also in nursing school and NEED some form of sleep at some point to function on my own patients and schoolwork.... 
Being 29+ weeks, it's extremely difficult between discomfort and 24/7 nausea. Ughh.