Guinea pig impaction caused a tear?

I have had my male guinea pig for several years now. And for some reason, I just learned about impaction. I was going to cut my piggie's nails today and noticed a huge brown lump in his anus. I got worried and thought it was an infection. I googled it, found out it was impacted. I researched how to fix it, and proceeded to do it myself. I ended up running warm water over it and it was extremely large, probably because I didnt know that it needed to be done. Anyways, I finally got it out, and I noticed that a part of his anus is torn. It was like that before I began the procedure. I feel bad for waiting this long to fix this problem. Is there anything I should do to help the torn part?