I take monistat 3. Works miracles
Talk to your doctor before taking any over the counter medications. He/she will likely want to prescribe you a cream for treatment.
My doctor prescribed 2 pills. One to do the job and one in case it didn't go away completely in 48 hrs. It cost me $5. I would just call, explain what's going on and have them call it in to your pharmacy.
My doctor told me to buy canesten 3 day combo pack and it cleared everything up.
Yes i got a yeast infection at 3 weeks pregnant and did over the counter i was scared for the baby but did my reseach and it was perfectly ok for the baby :) good luck