Six weeks pregnant and freaking out!!!!!!! Please read and any advice is appreciated!

Hi, my name is Ashley. I am six weeks pregnant. I had a miscarriage in early April. The doctors couldnt determine what caused it. I founf out when I was pregnant again at four weeks. I had slight bleeding at 5 weeks and went to the ER they did an ultrasound, pap smear, and everything was fine EXCEPT I have bacterial vaginosis. Before I went to the hospital I had never heard of this. They gave me cream and I took it. I had no idea it caused a miscarriage until now. I am also a very stressful person, it's just my personality. I am trying to get better and I think I am doing a lot better. But as I see it..this pregnancy doesnt look good for me. Has anyone else experienced BV caught it early, took the meds in your first trimister and everything turned out ok? Or anyone have any advice at all on how to stay calm during your pregnancy??