SOS! Please someone tell me what this is? Herpes?

Yesterday morning, I woke up with this swollen part on my labia majora. I also had a pimple on the side of the other lip which I popped.
I’m worried about the swelling, it’s soft but hurts when I touch it. Sitting, walking, standing is no problem and if I don’t focus too much I don’t even notice something is there.
I had last week a cold sore but I always wash my hands before and after using the toilet. But I noticed that I bought some new business pant for the office and they’re tight and if I sit too much I sweat a lot down there.
I have tomorrow an appointment to get this checked out but I’m freaking out. I tried to take a pic and analyze it and when I zoom in I see kind of mini blisters but with the naked eye in the mirror it looks just like a swollen pimple/lump.
Did anybody experienced something similar? Does genital herpes also cause swollen labia?
P.S. I remember the day before I was itchy down there and scratched a lot. I hope it’s just from tight clothes and sweat.