I'm in a confusing point at the moment. I know I'm interested somewhat in women, and are attracted to them, but I also get random sparks with males too, and its weird, but only ever truely fancied women, with romantic feelings as well.
I think though, as others have said, you shouldn't label yourself. I know I'm attracted to who I'm attracted to. It's more of a meter, than an apsolute 100% straight or gay.
I've never dated, and haven't had sex obviously, so its pretty hard for me to not question things, since I've never attempted anything.
If those pictures did nothing for you, and they didn't really me either, then thats normal. Doesn't mean you aren't attracted to those genders. Just because they have the organs, etc, doesn't mean you have to be attracted to them. One girl can do something another girl cannot in the looks department. It depends fully on you.
But yeah op, you will work things out eventually.