I could really use some ppl to talk to

So my man is a veteran and has ptsd and depression and anxiety. Most of the time we ate good but here lately hes rejecting me and im trying so hatd not take it personally because he tells me hes having a hard time and hes been having night terrors so i know its bad gor him right now. I want to help him any way i can but everything i do is right and not enough and i seem to only upset him because i get annoyed so quick but im pregnant and i cant help it. Does anyone know how i can help get through this and not make it harder on him?