I'm TTC admittedly half-arsedly at the moment until I visit the Gynae Dr to check me over and test my immunity to Rubella/hepatitis etc....
Anyway,I've been keeping an eye on my cycles so that I can show them to the Dr (I'm not an every 28 day gal) but my December period really worried me it was on day 22 -I started panicking that something was wrong but then my next period came on day 27= quite normal
I realised that at the time of my short cycle, for 2 weeks before I'd been taking Valerian root to help me sleep, thinking as it was natural it could do me no harm but I've since found (from american sites) that it can mess up cycles and induce earlier bleeding.