Is Fluconazole 150mg safe for during pregnancy and on thinner?

I talked to my OB doc after I got RX from OB doc. He said it was totally safe. But I saw this banner with yellow caution “do not use if you are pregnant.”🤦🏾‍♀️ that's why I ask you you all who experienced took this pill.

This is my first time, and I have had a yeast infection during the second pregnancy (19 weeks and 1 day). Symptoms have bad itching down there, burning, annoy leaking with whites /cotton come out of my vag.