so i had an ear infection so my Dr gave me a antibiotic for amoxcillin and now I feel like i have a…

so i had an ear infection so my Dr gave me a antibiotic for amoxcillin and now I feel like i have a yeast infection or a uti but I feel so bad taking medication while pregnant with twins am i harming them? it's bothering me so bad I can't sleep... alot of people told me never take any medicine when your pregnant just take it and get through it on your own because you can harm the baby or cause problems I don't want to do any of that