You can identify as whatever you want sexuality-wise but if there's exceptions that's okay! And if those exceptions lead to you reexamining what you consider yourself, that's also okay!
Considering how society raises us it's normal to question these things, since to a certain point you don't think about them and assume you're also "normal". But the actual thing that's normal is who you are, and you don't need to categorize yourself into a label either- you are who you are.