Is something wrong with me?

I like girls, I know this for an absolute fact. When I think about who I want to hold, who I want to kiss, who I want to date, marry, or grow old with it's always a girl. But... whenever I think about sex it's always a guy. Maybe it's the dominance that comes with the thought of having sex with a guy but none the less my thoughts always go to men for that kind of thing but nothing except for that. Does anyone else experience this? Does this mean I'm not actually a lesbian? It worries me to think this way

To clarify on here because I'd rather stay annon, I have never been with a woman. The closest I've ever come to being with someone was some sexting I did with a guy a little while back when I was in denial about who I was and was trying very hard to force myself to be straight