Welcome to the STD forum. I'll try to help.
Herpes is a possible explanation for your symptoms, but they are not typical for that diagnosis. As it happens, I just finished a rather lengthy explanation of why many education resources say things like burning, tingling, pimples, back pain and other symptoms are caused by herpes and yet most people with those symptoms don't have herpes. Those comments refer primarily to skin lesions like pimples, but the principle is the same: herpes is almost always typical in appearance and natural course; it is "atypical" only in retrospect. Another principle is that "atypical" herpes is usually typical but mild. See the discussion at
http://www.medhelp.org/posts/STDs/Acne--folliculitis--herpesdont-know-what-to-think-despite-two-negative-blood-tests/show/1076077
With symptoms like this, I would be concerned about a yeast infection. Yeast infections are easy to miss on standard testing, and I suggest you ask your doctor about trying an anti-yeast treatment even if testing didn't show that diagnosis. I'm also concerned about things like chlamydia and gonorrhea, especially with the "abominal pain and pressure" (maybe pelvic inflammatory disease [PID]?). Trichomonas also is possible. As for a "bacterial" infection, the most common such problem is bacterial vaginosis, and that is what Metrogel is used for -- but BV generally doesn't cause soreness, itching, or redness.
Having said all that, I cannot guarantee you don't have a new genital HSV infection. If so, it is probably due to HSV-2; your positive HSV-1 result probably is unrelated to any of this. It is possible that the blood test was done too soon to detect HSV-2 antibody, which takes a few weeks to develop. Therefore, you should speak with your doc about repeating the HSV-2 blood test to see if it has become positive since the first one. But my bet is that it will remain negative, that something else is responsible.
I hope this helps. You might consider printing out this reply and discussing it with your provider. If and when a definite diagnosis is established, please return and let me know.
Good luck -- HHH, MD