... ear infection Thursday. I was prescribed 500mg of amoxicillin 2x a day for 7 days. It's Saturday and the ear pain is really intense and worse. Is this a sign that the antibiotic isn't working? Should I go to the ER? Is there something else I can take that is safe to consume while pregnant? Does amoxicillin even help subside ear pain? Please help. I'm also taking labetalol for my high bp