Hello, I don't really think you should be worried because it sounds like a side affect off an anti depressant if your taking any? I get really bad nightmares aswell but don't let them get to me, if I wake up in the night I automatically try and go back to sleep, don't get out of bed because you'll wake yourself up more, but to be honest I don't thinkits anything to worry about, I always put nightmares down to our brains sorting out the things that are bothering us, I always dream something I can't see is trying to get my son.. But if I think about this properly 'the thing I can't see' is probably my anxiety, I can't see it but still want to fight it to protect my son, anyway, if they are bothering you badly go back to ur doctors and tell him otherwise they will get better