 [ Symptoms ] when can i have unprotected sex with my new husband after taking antibiotics  after being on birthcontrol for years i recently went on sulfamethtrimethoprim 800 i took 2 pills twice a day for 7 days the day i started my antibiotics was the same day i started my placebo pills which i started my period four days later as usual on the last day of my antibiotics i started my new pack of birth control as prescribed gildess fe 1 530 i am curious when my husband and i can have unprotected sex with no concerns of getting pregnant help we are newlyweds [ Disease ] antacids yes you certainly can and the one thing i will tell you is it could cause constipation or it could cause diarrhea so i really want to make sure that patients understand that they also develop a condition called rebound which means when they get their heartburn it will come back after taking too many antacids it will come back really more severe than they ever had before so you want to be tracking what you eat you want to be tracking your episodes and you want to be limiting your intake typically with an antacid you want to limit its use to about two weeks if you feel that your symptoms are still there you are going to want to talk to your doctor or healthcare provider for further evaluation