S.H.
time to find a way to relax & stop fixating on the neighbors upstairs. When you chose to live where you are (with your husband - on base) that was part of the equation! You have to take the good with the bad.
The fact that you mentioned that if "they touch you"- anticipating a physical confrontation, the fact that the police have been brought in, the fact that you're already worrying about the baby's sleep....says.....yes, you are under stress. You're letting way too much bother you, fester, & limit your happiness.
Pregnancy & hormones can make you feel on edge, feel a little crazy, & limit your coping skills. Only you can take charge of yourself! Try some yoga, try walking, talk to your dr.....but find a place of Peace within yourself & life will be better.