Constant Migraines, Bleeding In Nose, Blood Clots, Jerking In Legs And Arms, Forgetfulness. What Could Possibly Be Wrong?

Hey, I'm 25 years old.... I started having these constant persistent migraines for 2 months that can't seem to go away... They are getting so bad that now my nose is bleeding at least 3x a day. Tonight when I got a bloody nose the blood looked like blood clots. I've also noticed that I can't seem to concentrate when talking to someone and constantly can't figure out my words and when I text I'm constantly replacing words with other words... When I go to fall asleep at night my arms and legs will sometimes jerk and hit something. I'm also forgetting recent moments and have problems communicating because I can't remember the words I was going to say. I've also have had problems sleeping at nights. I won't fall asleep till 5 am and wake up at 10:00 am... Do you know what it could possibly be?