I'm on my 15th week of retina-a 0.05 and what was once hundreds of small under the skin bumps on my forehead are now around 50 under the skin bumps, so thats ok. But the biggest problem is that i am randomly breaking out in big red pimples. Where i get about 7 in a row, which disappear after 2 weeks and then come back later. Should i still be purging? I never used to break out in inflamed, large bumps before, when should i call it quits?