I hate having insomnia?

Another sleepless night...ughhh...my doctor wants me to try Tylenol pm or benadryl but im nervous i will become dependant on it being that this is a every night thing and on top of that i don't want it to put me in a really deep sleep to were i can't hear my daughter's alarms on her ventilator if anything was to suddenly go wrong...i just don't know i have 12wks to go ?