I have been cramping for months straight. i still get my 7 day period and am on birth control. could i have endometriosis?

Possibly: Also check your vit d level which could be too low between october and may. Avoid sugar, alcohol, tobacco, processed food. Eat healthy fresh fruits and vegetables, olive oil, flax seeds, get a good night sleep, move through the day, and destress. See kelly mcgonigal's book the will power instinct to be successful in making life style changes.