There's a resource that many people don't know about - the Minute Clinic at many CVS drug stores. They have a Nurse Practitioner on the premises and he/she is available for walk-in consultations. Not all CVS stores provide this service so you must google to find out if there's one near you.
I've gone there on three occasions for issues that needed attention but didn't warrant a trip to a primary care clinic. It's very reasonably priced and the Nurse Practitioner can diagnose and prescribe, including antibiotics.
You wouldn't go for a heart attack or anything that required major medical intervention, but the one in my town is just fabulous for stuff like this. I was treated at the Minute Clinic for a really persistant rash and on another occasion, I had my heart and lungs listened to and my oxygenation level checked. Was also treated for a remarkably painful swollen vein.
The Minute Clinic is a great resource and the one near me is much less expensive than the primary care center - and they do a better job.
if its your own hamster u can test it for rabies! but if its not yours, better come to doctor! I was bitten by alone dog on the street, so after that I pricked injections against rabies for the development of immunity! Good luck!