I get my periods on expected date but I always suffer from lot of pain in initial 2-3 days. The pain is like cramps and pain in lower abdomen and back and side pads. Now since last few months it is happening that with start of periods, bleeding stops for 2-3 days and when it eventually starts, the pains subsides gradually. I have 2 daughters aging 9 and 3. After first daughter we did not have baby for long. During this period we did not resort to any family planning technique. Then I was operated for right ovarian cyst twice and on advice of doctor we had 2nd baby. But the pains are still there. I am also taking thyroxin for hypothroidism.