Spina Bifida risks/bloodwork

FTM here and I totally just freaked myself out by reading Google (shocker). I go for spina bifida blood work today and I just happened to pop online and Google things about it. I have been taking prenatal vitamins for several months before I conceived. I also was put on progesterone around 4 weeks and I don't know if it was a side effect or what but I would wake up in the middle of the night sweating, but that stopped once I stopped taking it around 12 weeks. I read online that overheating can also cause spina bifida and now I am completely worried. Although there is nothing I can do about it now, just wondering if anyone else has ever heard this??