For the past couple of months I have worsened to the point I start feeling really bad just from sitting up a short time. I feel like blood is draining from my head and I get a lot of different symptoms. I start feeling weak like i need to lie down, sharp pains in head, weird feeling in my eyes, dizziness, sweating, nausea. Probably more I can't remember. It gets worse the longer I sit up and I feel better lying down. Is this Nmh? Also I want to know if this is worth going for tests for. I don't to make my self much worse unless there's a good chance of getting something that will help, like drugs. So please let me know if you have had similar symptoms and have tried treatments. And whether they worked or not.