As Craig said, there is an organise called Qlife that you can call, they are an LGBT peer support group. Now, whilst you may not know if you identify as LGBT yet, having an anonymous chat to a peer can be very helpful. So if you feel up to it, google them. Also, they can recommend an LGBT friendly counsellor near you, if you feel that this may help you work through the ideas, thoughts etc that bounce around your head all the time. They helped me heaps.
I wouldn't worry about being uncoordinated, I was 25 before I even lost my big V. I then ended up getting married to the same wonderful woman, only to recently come out and tell her that I was gay after 20 years of marriage.
Sexuality is fluid, and from a lot of posts I see on these forums, for some it can change without notice or reason. There may be some particular thing that attracts you to a certain person, whether male or female. nothing wrong with that at all.
I think human beings are only now just starting to understand that we are even more diverse and unusual than once thought. Society had labelled things in a certain way and we all were conditioned to believe that was the "normal thing".
We're now realising that there is no "normal" anymore. Just "different".