Provera- second month?

Hey All, I took provera for the first time last cycle and it was miserable. Made me very hormonal, and my cramps and bleeding were the worst I’ve ever had. After my hysteroscopy my doc told me I can start letrozole next cycle, YAY! Issue is, with my crazy irregular periods idk when my next cycle will be.

If you’ve taken provera, did your next cycle start “on time” the following month? They gave me another round of provera to take if I don’t start by day 35, but I don’t want to wait that long! I’m thinking I’ll just take it early to force my period earlier?