I you’ve had a yeast infection while pregnant please tell me your symptoms

I’ve never had one and 2 days ago randomly my clit was really itchy and then it was kind of inside the lips of my vagina (the itchiness )but not in like the hole. And I looked closely at it and there’s thick stuff inside the lips like thick white ? Is this a yeast infection? I called my ob and they said I can come get tested but it could take 2-3 days for results or I can just go buy monistat 7???