Hello, First of all I am 20 years old and I have had my menstrual cycle for about 8 years now. I just recently went 2 months without a period or any sign of one. I took urine tests for pregnancy a few times all negative. I then started my period and it was lighter than usual but i didnt think anything of it. But since then i have been bleeding for going on 3 weeks now and just yesterday my cycle started to get real heavy and ive had really large dark clots.. Im kind of freaking out.