I can’t sleep

I’ve tried going to bed early but I always just lay there and toss and turn for hours. If I do ever fall asleep my body just wakes me up at 5 am or fucking 3 am. It’s getting to the point now that my eye bags are Turing purple. I haven’t been able to eat lately and I keep on yelling at people for no reason. It’s almost been 3 weeks now and I need some help.