Hi Vicky, I have high blood sugar before my period and sometimes for a day or so into it then can spend a few days hypo. It’s all very frustrating and I can’t see any pattern, changes every month grrr. I think there are apps you can track your cycle with, apparently there can also be higher blood sugar days mid cycle. I think some women adjust their basal insulin if they know when they are going to go higher - with a few months data you could maybe recognise a pattern and discuss with your diabetes team. I’m on Tresiba so that would be tricky to adjust - especially as each month is so random for me!
I tend to eat slightly lower carb during the higher blood sugar days of my cycle, and make correction doses as I go x