Continuous Pimple Like Formations On Inner Side Of Labia Minora, Blood On Popping, Not Sexually Active In Recent Past. Cause?

Please, help me. This is the second month in a row that I get these pimple-like formations in the inner side of my labia minora . Here, I took a picture, sorry if it looks dreadful.... It s very itchy and the last one (you can see a tiny dot above this new red one) grew and grew until one day it popped and blood came out. I thought that was it...but a few days ago this new one surprised me. What could it be? It doesn t look like a herpes to me... I haven t been sex.active in 3 months, and when I am, I m careful with my boyfriend.... WWW.WWWW.WW