alikt,
First, I'd like to say that you are acting mature and responsible for your age. It's good to see that you are researching and educating yourself now.
I had a similar problem at your age long ago. I thought I got my girlfriend pregnant in high school. We went to planned parenthood and they treated us very nicely when she went in to get tested (back then no home tests were available). Anyway, my point is that I believe they don't require your parents permission for STD tests. So, don't worry about that.
Second, you should still go and get tested for herpes even if your bumps disappeared. You're right that it could be something else other than H, but it's good to be certain. Just think, if you don't you'll always wonder and worry yourself crazy.
If you really don't want to, then please use condoms at least from now on and keep an eye out for any more symptoms. If the bumps RETURN, then that could be a strong sign that it's herpes. At that point, you really should obtain a test.
I hope you make the right decision; Take Care and if you need anymore support come back here.