Welcome to PC Blubbermouth.

What you are dealing with seems horrid and is not normal - whatever normal is. There are a multitude of things that could be causing this. Please go and see a GP to start the ball rolling. Get some blood tests done. Maybe if you could take some time before you go to write things down. It is easy to forget so many things when you go to a doctor so least this way it's one less stress.

Don't put off seeing a GP. If you dont have a regular doctor then find one who you feel comfortable with. Meaning if you go to a bulk billing clinic dont settle for the first one try again with another one.
Please let us know how you get on.