Hello! I started HRT about four months ago. I used to have long cycles (35 days +) but my last couple of cycles have been 20 days. I also feel quite unwell (migraine/headaches/brain fog) in the week that it comes. I thought this was related to ovulation but I’ve started my period today! I’m not sure what’s normal and I feel like I might have messed up my cycle to the point that I don’t recognise it. Short of dialling back the Estrogen (from 3 pumps to 1) I’m not sure what to try. Help!