im only 15. i have had heavy bleeding with clots for 3 weeks with cramping .. i dont know if i was or am preg .. it started three weeks ago and is off n on i waited it out because i was told it could have been cause my period was short last ywo months.i was also told it was a miscarriage but i dodny know if i was preg nothing changed or seeemed diffrent. im goin to doc on tues but im scared ... does any one know what this means or what happing