it sounds quite worrying to me. sorry to say, but i think it definitely could be herpes.
Well I have herpes, myself. Based on my experience, your condition seems very different than mine. But it sounds like you have some other things going on down there, that may confuse the situation.
In my particular case, I started feeling a stinging sensation down there, roughly 3 days after exposure. Within about a week and a half's time, a sore had developed on my vaginal lip. It hurt. Bad. Could hardly walk. Went to the doc and was diagnosed with herpes. They gave me anti-virals, and probably within a couple of days, I started feeling much better. Within about a weeks time from there, the sore had pretty much healed. I didn't have multiple sores.
I would say that if the anti-virals seem to be clearing up your pain/sores, then it is likely you do have herpes. Otherwise, if it is something strictly bacterial...than an anti-viral won't help that cause. It almost sounds like you might have a bacterial infection...possibly in addition to herpes.
You did the right thing by going to the doc immediately, and informing your partner. I will say that while herpes is not a diagnosis that you want to ever get...it really is not that big of deal. Naturally, I was devastated when I got the news (over 10 years ago)...but in the big scheme of things, it really isn't a big deal.
Good luck with everything.