My sister just misgendered me.

Before I start, she's 6 and I'm closeted, I am aware that she isn't at fault for this, I just want some support for it.

I (15, female, genderfluid) am currently a boy, I have been for a little over 2 weeks at this point and it has yet to change. I am also on my period, I'm not transitioned due to me being closeted and my family isn't the most accepting of trans topics so they don't know that I am under the trans umbrella.

I was out of period pads today so I was asking for some and I eventually got two packs of period pads in a pink packaging and two packs of period pads in blue. My sister followed me to my room when I was putting them up after putting one on and she asked why it was blue (I usually have period pads in a yellow packaging so she assumed that yellow was the universal color for period pads to be because she's 6)

I somehow forgot I was closeted or something because I said that the pink is the girl packaging and the blue is the boy packaging as a joke.

She then looked confused at me and said, "but you're a girl?" And I sorta froze for a moment because I remembered that she literally thinks I'm a girl.

So I just mumbled a "yeah" and I told her to get out of my room after that. :(