I think it shouldn't be a problem, sounds like you've already done all you need to do to keep the wound clean. Just keep an eye out for swelling, pus, or a rash which would indicate an infection or something more serious. Sounds like it wasn't too bad of a bite which is good. Rats can do some serious damage when they want to. I once got bitten by a rat at a pet store and those teeth went in deep. That's also why it's super important to supervise live feedings always!