Hello. This probably sounds completely mad, but hey ho, I'll ask it anyway. I had braces put on my teeth last week and I started menstrual bleeding a couple of days later. I have been on the Pill for a couple of years and am not due to take my Pill break for another week. I know that oestrogen levels can affect the amount of pain that I feel from the braces, but can it work the other way? Can the braces upset my cycle? It seems quite a coincidence that I started bleeding and getting spotty so soon after the fitting. I am 38 years old, fit, healthy and slim.