First off, be gentle with yourself. Most women deal with this, me included.
This is something I struggled with for years and couldn’t out train or out diet. What shifted things for me was understanding glucose and how often I was spiking it without realizing. Stubborn belly fat is often tied to those constant spikes and stress on the body.
I went deep on this and found The Glucose Goddess, who breaks it down in a way that actually feels doable. No extremes, just a simple shift in how you eat your meals.
Eat in this order: Fibre first, then protein and fat, then carbs last.
That’s it. No crazy restrictions. Just changing the sequence.
If you’re having something sweet like chocolate, “blanket” it with a fat like a handful of nuts. It slows the spike. That alone made a noticeable difference for me.
If you want to take it a step further, you can use a glucose monitor like Dexcom continuous glucose monitor and track your own patterns. I’d start around day 5 of your cycle and wear it for about 10 days. It gives you real data on what your body responds to so you’re not guessing.