Before you begin using Phexxi vaginal gel, tell your doctor:, About all the medications you take, including prescription, over-the-counter, vitamins, and herbal supplements, About your allergies, About your health conditions, If you are pregnant or plan to become pregnant, If you are breastfeeding or plan to breastfeed, Phexxi does not prevent sexually transmitted infections., Do not use Phexxi if you have a vaginal ring., Do not use Phexxi if you or your partner is allergic to lactic acid, citric acid, potassium bitartrate, or any of Phexxi's other ingredients., Do not use Phexxi if you have bladder or kidney infections that keep coming back., Tell your doctor right away if you or your partner develop genital discomfort, or if you experience vaginal burning, itching, or discharge or if you develop a yeast infection, urinary tract infection, or bacterial vaginosis. About all the medications you take, including prescription, over-the-counter, vitamins, and herbal supplements, About your allergies, About your health conditions, If you are pregnant or plan to become pregnant, If you are breastfeeding or plan to breastfeed