Weird Dreams & Nightmares

Ok, I'm almost 7 weeks, I haven't had nightmares this pregnancy, but strange odd dreams with very strange people from my past... That I've tried hard to forget. In my second pregnancy I had nightmares up until second trimester, third pregnancy I had nightmares until third trimester this one I'm just having strange dreams that go no where. Have any of you ladies been experiencing them & do they seem to get better or worse as the pregnancy goes on?!