Hi everyone!

I started taking erythromycin a few months ago to help with my acne (on my face, back and chest). It helped at first, but slowly the acne started to come back so I went back to my GP and got a prescription of lymecycline. This was about 3 weeks ago and right now I have had a really really terrible breakout not only on my face, but it's also on my back and chest. It's the worst it has been in about 4 years. I'm going to go back to my doctor about this, but my questions are:

1. Do you think the breakout could've been caused by coming off of erythromycin?
2. Will doxycycline work if lymecycline hasn't?