Extra folic acid - TTC post Miscarriage

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Hey ladies! I miscarried 5 weeks ago today and I'm still waiting on results on my genetic testing to see if I'm a carrier of the MTFHR gene. My sister had it and miscarried twice and now that I miscarried my doc wanted me to test to see if I happened to be a carrier too. I'm still waiting and praying I find out in the next week or so (it's been 2 weeks). I finally started my period on Friday and I'm just wondering if I took extra folic acid outside of what's in the prenatal vitamins if that will be harmful or not before I find out results. If I'm a carrier that's what I will have to basically do. But bc I don't know the results yet and we can start trying again next weekend I'm afraid I'll get pregnant again under the same bad conditions if I don't take precautions now. So if I take extra folic acid over the next week or so before I get my results curious if that will be bad for me or not.