period twice in three weeks after surgeries?

Hi,
Welcome to ehealthforum,
The symptoms (period changes, backache, frequent urination, tender breasts, darker areolas) that you describe could be suggestive of possibility of pregnancy (if you have been sexually active and trying for pregnancy after the surgery). If you suspect chances of pregnancy, look out for development of any other new symptoms suggestive of early pregnancy. Wait and watch for your periods. If you do not start with periods within 10 days of expected period dates or if you develop any new symptoms suggestive of early pregnancy, or if you get abnormal periods, visit your doctor/gynecologist for further examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Drink plenty of water. Take adequate rest. Maintain healthy diet.
Take care.

thank you very much,i have just recently started getting a weird fuzzy feeling in my uterus area,and all of my jeans are too tight all of a sudden,i have also lost 7lbs and i haven't been trying,i now feel the need to drink pepsi,and i have never liked soda,also i woke up to having pains from being constipated for 4days,and i usually have a bowel movement at least 4times a day