How does your sugars react when in your monthly cycle?! I have implant and am very irregular, but can bleed for 10 days. Had pump 4 weeks now, with near perfect control but this weeks been very strange, this is the only difference from previous weeks!
I find that during the week of my period I get really really sensitive to eating carbs in the morning and my sugars go quite high mid morning. It also seems to take ages for the insulin to kick in so although I end up with my bs in range by lunchtime it takes me a while to get there. So now I eat low carb for breakfast during that time.
I think you just need to test and look for patterns over a few months as I think people really react differently.