Change in menses ????

Hi... I was in my 3rd week of ts 100% and I'd had my period from my 7 day break in my contraceptive pill as usual all was well and good. I then started taking my pill as normal.. And 4 days later I'm on a period again???!!! Anyone else experienced anything similar?

Hi sorry I can't help with this one, I don't take the pill and my periods have remained normal while being TS.