In desperate need of help!!!

I'm 5 weeks pregnant and I've had a mild yeast infection for about 3 months now. After the cream didn't work, my ob prescribed me Fluconazole 150 mg. As soon as I got it, without thinking, I took it immediately. I started getting a bad feeling after I took it so I did a few google searches on it and it said it causes miscarriages and birth defects when taken in the first trimester!!! I'm horrified! It took me so long to get pregnant and I don't want anything to happen to my baby. Please help me!