If you are saying that you are gay and you thinking you are straight perhaps that doesn't mean you are for sure. For example there is bisexual.
Questioning or whatever it may be doesn't mean you're any different. I see that you figured out that you not attracted to girls. That's fine, but this applies to everything. Just because you question yourself doesn't mean that you are the thing that you question yourself with. Like for example maybe someone's lesbian. Then they question maybe they're asexual. That doesn't automatically mean that you're asexual. Maybe you were never lesbian, but asexual. That's fine. But you can also still decide that you're lesbian and not asexual and that's fine too. It's okay to question yourself no matter if it's your sexual orientation to your gender identity. It's part of life to question things.