It wasn't unusual for me to come on a week early being Hypo but lately I've been coming on every 2 weeks & heavier than usual. How on earth that amount of blood has time to build up in 10 days I don't know. Any suggestions as to what I can ask the doctor please? I don't have much hope since I've seen endo's & they didn't make much difference. I was on Levo/Lio combo which didn't help, 100+10. I went back to Levo/NDT combo which I'm on now. NDT alone didn't work for me, combo is best I find. Am on high dose iron (prescribed) & B12 (supplement). My bedroom looks like a pharmacy & the meds still ain't working!