I had a thyroidectomy November of 2015 since then my next to nothing menstrual cycle that used to last for 3 days...Has now become twice a month extremely heavy bleeding that last for 7 to 10 days long. This has become a extremely uncomfortable disruptive issue in my life because it's so heavy that I have to wear a tampon and a pad. My doctor has tested me for cervical cancer they've done multiple ultrasounds since this and they're not finding anything. I'm 50 years old and my GYN tells me it could be menopause it could be fibroids they just can't figure it out. I take my medication regularly and I'm on Synthroid 88. Does anyone have any suggestions??