Is this herpes?

Monday night before bed I started to feel raw on my clit, and it got worse yesterday (Tuesday). My clit was red and swollen but no visible bumps. the picture below is what it looks like today. (the bump right next to my finger on my clit). It doesn’t itch or burn when I pee, and it’s only one bump. I haven’t had any bumps prior to this and no flu like symptoms. It does sting if I touch it, but that’s about it. I have an appointment tomorrow to be tested for all STDS but I am curious if anyone can give me some peace of mind that it isn’t herpes.