hi, i have been menstruating for the past 39 days, the last 12 days have been passing large blood clots weighing between 2-4 oz every 30 minutes, i have a constant head ache and i am soooo very tired. i had a pap smear in November that came back in the clear, and a mammogram that also came back clear. my lower back is killing me though and i feel bloated constantly, constipated most of the time as well with soreness in my lower right abdomen and cramps in my stomach as well, any ideas on what is wrong? i'm waiting for my insurance to kick in before i go to the doctor but not real sure i can wait much longer :'(