Should I get a new OB?

I told her that I ordered prenatal vitamins and vitex, and that I'm stopping my bc this week. From what I've read and even on the glow app you should have preconception testing done, especially if you've had issues before. I also asked what else I should be doing and she said just start taking a progesterone supplement when you get a bfp. Well vitex is supposed to increase progesterone for pregnancy is it not? I read to take the vitex until the 2nd trimester. I don't want to od on the progesterone, but I need this next baby to stick or my husband might lose it. He gets more devastated with each loss. 

She also is aware that I'm O- blood and dh is +. I've asked several times about a rogham shot during appointments because I never got them after mc when I should have. She says it's fine and that I'd get it possibly during or right after pregnancy. I know she's a good doctor that's why I chose her because I saw she was a high risk OB. She's more of a wait and see type person and I'm trying to be cautious and save the heartache.

So can anyone give some input on the vitex and progesterone supplements and if I should have the rogham shot with hormone testing?? Maybe I'm being crazy but If I need a new OB I'll get one.. Do you think she's right? 

Sorry for the long post I'm just worried about losing another baby because of ignorance😞