 [ Symptoms ] is it ok to take 2 3 prenatal vitamins daily  im taking these vitamins to help my body get ready for pregnancy also in addition need extra vitamins because i had gastric bypass over 14 months ago is 2 to 3 times a day a good amount [ Disease ] i do not have any way of knowing if your vaginal discharge is an std or not since i can not examine you look at the discharge under a microscope or test it in a lab nor do i know your sexual history or your boyfriend is sexual history the only thing you can do if your doctor is treatment is not working is to go back be re examined and be tested this time by a vaginal culture or smear a person can have a yeast infection and something else so if you are worried about an std that something else will need to be specifically tested