I Took Clarithromycin For 3 Weeks. After Stopping It, I

I took Clarithromycin for 3 weeks. After stopping it, I got a pimple-like rash on my face, similar to rash I've had from other antibiotics. I also have leg, ankle foot swelling in both legs. Rash and swelling has gone on for 7 weeks. When can I expect the rash to clear and is the leg swelling likely related to the allergic reaction and what can I do to treat both conditions? The doctor is aware of this. Thank you.