What could this be?

Okay so, for the past two days I have had an incredible sex drive and have been masturbating a ton & though I've came and came...I'm still not satisfied and my orgasms are much less intense. At this point I'm very sore and very itchy. It's not uncommon for me to be itchy after masturbating. However, the problem lies here: on my left side of my vag (the lips, outside) I noticed a bump. I noticed before when masturbating a few days ago but it was feeling good so hey. Now it's kind of alarming. I'm not sure what it is, I don't see anything & honestly because I don't shave I thought it was just knoted hair. But it's itchy like the rest of vag right now & I noticed some green on the toilet paper when itching...