wedding wears specially designed for pregnant ladies

Ok. So I have been telling my doctor for the,past 2 months that I cant sleep!!! all he keeps saying is I can take tylenol pm,which is not helping. So I have been doing my own research and everywhere i read says its safe to take benadryl and unisom while pregnant. I have to do something, im going crazy due to no sleep!! does anyone else have or had this problem? or know these meds might be safe?? wedding wears specially designed for pregnant ladies