Have found a bump above Vagina near thigh. Popped like a zit and had pus and blood. Could it be herpes?

Less likely. it is not likely to be herpes most likely it is a gland cyst or a hair root that trying to get infected. use a heat pad, avoid the temptation of squeezing it, clean with alcohol, and apply topical antibiotic. you are 20 years old, practice a safe sex ,this way you will never worry about STD including herpes. and remember there is some STD you are going to carry with you the rest of your life.
No. No. Most likely an infected hair follicle. These lesions are most common when women shave. Herpes is an ulcerated lesion that is quite painful. .