3 days ago, the condom broke while I was having sex with my boyfriend. I took Plan B within 3 hours of the incident. Starting yesterday, though, I have been experiencing light yellowish discharge, and I'm not sure if it's something more serious than just the Plan B pill. Last month, I was hospitalized for a UTI that spread to my kidneys, and I took the antibiotics as directed. I'm just scared that maybe the infection is back (or never went away), or that maybe I'm having a reaction to the Plan B.