Before I watched gay male porn I felt completely gay and mostly asexual. That made coming out to people difficult because my attraction to girls wasn't very strong. That made me less sure of my sexuality. Eventually I got curious about gay male porn. I ended up enjoying it. Since I watched gay male porn I kind of felt like I was attracted to guys.
I think you shouldn't judge based on porn because you feeling aroused could be just because love making between two individuals is sensual and we humans have a tendency to be aroused by sensual stuff! So unless you feel attraction for men in real life don't make conclusions! A good way to know, would be to lay off the porn for sometime a few weeks maybe! N then see how you feel ?
I feel like that's normal. There's apparently a lot of lesbians or same-sex attracted women who watch gay male porn for a variety of reasons. Lesbian porn is often targeted at men and as a result, may exclude same-sex attracted women. This isn't always the case of course, but there's my 2 cents.