If you want to give it a name (I know some people don't like labels, for other it's helpful, so do whats best for you) I think you could use bi for you.
It doesn't matter WHEN you discover something about yourself. Your identity is not more or less valid regarding to your age.

The most bi people I know (including myself) have periods of questioning if they are just fake and they are making things up. I think it's good to know that this is very common.

If you want to identify as bi, you are welcomed to. For me bi must have a place for all people from "I experienced desire for all kind of genders (romantic and/or sexual)" to "I know I have the potential to ( even if I'm not sure if I already have experienced it)"

I don't know from the comunity in your country, but the german bi-comunity would welcome you if you wanted to, and respect it if not. It's up to you to claim a label if you want to.