Help!!

So ladies I need some help. I am 7.3 weeks pregnant And I have been having itching and burning in my vagina and inner lips after I use the bathroom and wipe. I thought yeast infection so I have started Monistat 7 day. When will it clear up the symptoms? I have used it for 2 nights so far but I feel like it all comes out at night. Thank you ladies for your help!!