Is this offensive?

I was hanging out with a new friend who is a trans woman. We were talking about our sexualities and I said that I'm attracted to everyone except cis women. I didn't think much of it at the time, but I got stoned tonight and was thinking that it might have been offensive that I differentiated between trans women and cis women. She didnt say anything and I didn't see an offended look on her face, but she might just be used to people saying shitty things so she doesn't react anymore. I feel pretty shitty that I might have offended her, however inadvertently. Should I apologize?