Undecided uality?

I've always generally considered myself to be straight but I've never really been sure about it. I've only been in relationships with men but I definitely wouldn't mind being in one with a woman if it worked out that way. I don't really have "crushes" on people that I don't know and from afar I find women to be more attractive but I've never liked a a female friend of mine like that so far. Honestly, do I really need to clify my self as straight bi or gay?