Could I be asexual?

I'm only 16 and I've only kinda kissed one guy but I didn't really want to kiss him because I think I was just nervous but I didn't feel anything when we kissed but I mean it wasn't a real kiss and I kept turning my head and telling him to stop when he grabbed my face but I've never had the urge to kiss anyone but I get turned on when I see porn and stuff but yeah I've never had the urge to kiss anyone and I was thinking could I actually be asexual or anything? This guy sends me dick pics sometimes but I don't really get turned on by them, I'm kinda worried haha what do you guys think?