A Few Days Ago I Noticed A Soreness On The

A few days ago I noticed a soreness on the top of my vagina and it figured it was just an ingrown hair because I had just shaved. I tried to pop what I assumed was the ingrown hair and noticed there was no head, just a lump. I waited a few more days and still nothing. The pain has gone away but now I noticed a bruise on top of the lump. While the lump has gone done in size, I am concerned what could have triggered this.