I just got back in town from a business trip, and I haven't had time to read all of the replies. One thing that caught my eye about your post, though, was that your old rheumy told you it was ok to continue enbrel as long as you were taking antibiotics? I don't think that's the case, especially if you have a severe infection (in your case a UTI). I know that my rheumy does not support that--even if you are taking the antibiotics, you're not giving your body enough of a chance to respond to the antibiotics if you're still taking the enbrel. with a minor infection, I could see continuing the enbrel. But with a serious infection--no!
I hope you feel better soon--and you should talk to your new rheumy about this.