i am 18, have twins the age of 2, had an emergancy cesearean. i have been getting very painful sides, back and stomach, i have been for a pelvis scan, had urine samples everything ok but my periods are always different and very painful, sometimes im 2months late other im on a week after i have come off, i had the coil put in 1 hlf yrs ago, i also suffer from headaches at the front of my head and postnatal depression! what could the pain be?