For the last few weeks my cycle has been around 27 days. But the last few months it's been later and later. The cramps start at the same time as they did before but now it's a few days before my period actually arrives. I'm 29 and no history of anything like early menopause etc.
Any ideas please? I am taking sertraline (AD) and amitriptyline (for pain relief), but have been on them for a long time so I don't think that can be it either.