To answer your question, I was told yes I was contagious, but none of my friends, family, or my husband caught it, thankfully! I mean, as soon as my lip swelled up and blistered, I obviously stopped kissing and sharing drinks with people as I knew something was wrong...
I just did a search about it, and I did not realize they categorize MRSA into 2 groups: Hospital-Acquired MRSA (HA-MRSA) and Community-Associated MRSA (CA-MRSA). I had the community-associated one, which is not as serious as the hospital-induced type:
I think I was on strong antibiotics for about a month (only oral ones--no IVs), but it seemed to clear up for me in 2 weeks. But, again, I had the less-serious type.
I hope you feel better soon!