Male Baldness Info

I straightened my hair for about a year with an iron. I am a 16 year old, male, athletic, healthy. I have recently shaved my head to a number 3 and the hair seems to be not AS thin, BUT it is still thin on the top of my head (crown area) the rest of my hair is very healthy. I am worried that I might be going bald , there are NO signs of baldness on my mothers side of the family. WHAT SHOULD I DO! AM I GOING BALD? help me please.

Ok, so I have a real serious problem. It’s been bothering me now for quite a while…and it mostly happens during physical activity such as working out. It’s basically a strong pulse felt exactly in my cowlick area (middle of head) I can completely feel the blood moving strongly through out the arteries in my brain. I don’t lift very heavy weights so it couldn’t be caused by that. I mean even if I lift a light *** weight it starts to pound in my head. I think I’m also experiencing some sort of baldness in the cowlick area. Please help meee. I’m soo worried.. im only 18, male and as of right now don’t have medicaid to see the docotor. Once again any help is appreciated.