I have the same problem, I went to the GP and they put me on oral anti-biotics for around a month until it was obvious it was just getting worse, so then I ended up in the hospital for a ****ing week on IV anti-biotics(they were going to operate but after a day on IV they figured nawww) then when I leave with the swelling down but the infection still there it comes back while on holiday, big bitch to get the oral anti-biotics while on holiday, then when I get back(and completed the course of anti-biotics) it isn't worse or better, go to consultant for check up and he tells me to just wait for things to settle down.
If I were you, I'd seriously just get them to operate on it, esp. if it's ingrown since you're going to get people saying it'll fall off, others saying it's ingrown, etc. and I've had this problem for way over 3 months now and I just wish they operated and drained it from the start. It'll only get worse if it's at the point pus is coming out.
EMZ=/