like you, i have recurring nightmares (many a night) about past sexual abuse & violence. it affects me the same way, ie: not feeling well, nauseated, depressed feeling all day..
it helps if you have someone to talk to about it.. so well if you ever need someone feel free to message
some suggestions i have on the nightmares are to talk about them to someone close to you/gone through the same thing, or there are some meds that reduce the intensity of the nightmares so you may want to check into that if you'd like. otherwise there are many books on PTSD (i dunno if you've done any research) but one I recommend is the Post Traumatic Stress Syndrome Sourcebook. it is very thick & very resourceful :)
hope this helps
It is possible that any meds you are taking make you dream more especially nightmares ask your Doctor about the doseage or changing them. ,it may also be giving you other side effects so check it out, you should be able to feel better than you do. Good luck