I'm now nearly 20 weeks pg and had to go to the doctors last week due to pains I'd been having. She did a swab test and it's shown that I have Group B Strep (which I was aware of already) and also some second infection which they are giving me antibiotics for, I have no idea what this second thing is, but I thought antibiotics were out in pregnancy. Can they harm the baby or could this infection harm him? I seem to have spent the last 20 weeks in a state of permanent panic and I think this one may just tip me over the edge.