Hopefully you can help.
So for I think the last few months I have been noticing a lot of change throughout my body. I am 18 year old, 115-120 pounds and around 5'6" to 5'7".
So I have been notcing my hair has been falling out more then it should be, mostly whenever I shower. In just 3-4 showers I have a ziplock bag full of hair. I dont iron or curl my hair, I do dye it occasionally but not that often. I also havent been having bowel movements that often and when I do they are very hard, I spend about a half hour or more just trying to push it all out sometimes. I am finding I am getting full off of a lot less, I eat half my supper and then I am stuffed and really just dont feel hungry at all even if I didnt eat breakfast or lunch. But I get every now and then a burning sensation going through my stomach, I think its my stomach acid against my stomach lining that I am feeling atleast that is what it feels like to me. My knee caps have been acting up, espically my left knee it hurts a lot to move at times or have bent for more then a few minutes and when i straigthen it out it still hurts for a good few minutes. I am constantly getting pain in the head, and get random twitchs throughtout my body. I dont really find myself feeling much emotion either, except for rage sometimes, little things that usually never would get me mad now just bother the hell out of me and I freak out. Finally my periods are still missing for more then a few months at a time.
I am worried something seriously is wrong with me, i dont feel like myself anymore just kind of sitting in this body at time.
Any help will be appricated