Is there a way that I can stop having my period? I want to have children in the future but I get cramps all the time and it hurts so much. I also can't take pills anymore, they started to make me sick.

Talk to your doctor about different birthcontrol options. Depo for example, you'll get a period 4 times a year, or if done right none at all. There are options, you just need to talk tot your doctor.