Should I get a new OB?

🦄🍭💀 • TTC baby #1 👼🏻👼🏻👼🏻
Soo basically my ob has been very blah and I feel like im bothering her with ttc questions. Obv I do my research before I ask. She knows that I've had 3 miscarriages and that id be a high risk pregnancy, so I feel like she should be concerned. So maybe you guys can help me out.
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 <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> 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😞