Quoting Earth Mama:" I'm supposed to be taking amoxicillin (antibiotic) for bladder infection and I am breastfeeding my 2 ... [snip!] ... is clueless about many things in life I hate this drug by the way, it's making me incredibly thirsty and gives me headache."
I had to take Keflex for a bladder infection. I was told that antibiotics can cause sensitivity for the baby as well and to watch out for rash, diarrhea etc. My pediatrician said Keflex was fine and they prescribe it to babies. Call your pediatrician and ask about it if you are worried. I hope you feel better! UTIs suck!