Antibiotics, Can it be harmful for my baby?

SuperEva

I am 10 weeks pregnant and I have a big problem can someone help me?
Hello there. I am 10 weeks pregnant. Even before I got pregnant I suffered from recurrent urine infections usually caused by E. coli. Sometimes I deal with it by drinking plenty of Cranberry tea and other liquids, other times the infection is very stubborn and painful so my doctor prescribes antibiotics. In my 10th week of pregnancy I caught a small cold and couple of days later I got that burning, painful feeling when I pee. I immediately went to the lab and had a urine test. It turned out my infection was caused by something called “Proteus Mirabilis”. My doctor gave me antibiotics for it and said it wasn’t so serious, but I’m still worried. Can it be harmful for my baby? How can it be prevented?