First IVF Cycle

I should be starting my first IVF cycle once I get my period this week 🤞🏻 we were supposed to start last cycle but ended up with a cyst and I got put on birth control to get rid of it. Took my last pill in the evening of March 26th so just patiently waiting for start AF! How many days should I expect to do stims?? 3.5 years TTC with unexplained infertility. 4 failed IUI’s and 6 cycles of Clomid, hoping IVF does the trick for us. My husband and I are both 26