I can't afford to go to my doctors right now and I have a UTI. (I get them all the time, that's how I KNOW what it is) - I've had it for about a week and was just trying to wash it out with cranberry and water and stuff but it hasn't really gone away.

I have Amoxicillan for previous flu's and stuff - will that work against the UTI or do I ABSOLUTELY have to go and get what the generally prescribe?