Abstinence & Celibacy Support Group
The pressures of sex from peers, the media and culture can be overwhelming, but you are in total control of your body and celibacy is a choice that many are making. Find sanctuary with people who are choosing to abstain without fear of judgment.
Of course you were nervous. It was your first time. So the question is, are you physically and emotionally attracted to her?
You can question your sexuality if you are not physically attracted to women and you are to men. Either way, it's okay. Just breathe.
My only advice to you is to try and be as open and honest with her as you can. She deserves to know that this isn't an easy time for you right now and you are trying to figure things out. It's going to be okay.
Everything you are feel is natural.
It's great that you waited :-)