Ladies Question

Has anyone ever used provera and how did it help with your period getting back on track and TTC? I’m stressing myself because this is my first time TTC since my miscarriage and I’m 17 days late with negative blood test but i am also having dull aching not bad just a uncomfortable but i been using vitex to regulate my period get it back on track and what I’ve noticed is that when i use it the ache is gone but once i miss a day or take it late it comes back i feel like i have PCOS OR a Cyst i hope it’s just a small CYST when i go back to doctors so i can TTC again .. i heard with PCOS is so hard to conceive and that’ll really break my heart