I was prescribed amoxicyllin when I was about 18 weeks to help shift a chest infection. The doctor ensured me there was minimal risk and so far everything seems fine with Bump. Hope that helps.
I've taken it in pregnancy before. No 'drug' is without risk but it's a measured risk and if the incubator (you) can't do your job properly because you're sick, baby will suffer anyway. (((((hugs))))) I know it's a worry xxx