National coming out day

So I've been pansexual since as far back as I can remember but I married to a Male (I'm female) and he has known since we met 6 years ago. I've always been open with my sexuality and he , like most men, choose to hear "oh you like females , so that means threesome yeah?" .. although I am all for having a good time threesome but not when I'm in a long term relationship.. I don't like sharing 🤷‍♀️. Anyway the point is pansexual means I am attracted to all gender types. I've always had a slight fear of telling my friends my sexuality because I'm afraid they might think I'd been "checking them out" .. which obviously I'm not .. I'm married duh! But since today is national coming out day I made a small post on my snapchat saying I am pansexual and figured whoever doesn't support that then maybe I don't need them in my life. Thankfully no one back lashed at me.. until my husband was going through the stories.. and he comments "omg you believe in that whole pan thing? There is only 2 genders so its the same as being bisexual" I don't really know why but its hurt me to the core. Hes my husband so his opinion matters to me and it hurt me to feel invalidated. It also really hurts because I am HIV positive and the LGBTQ community feels like one of the only safe places i can be fully myself and not be shamed and the fact that he made this lil comment made me feel like he was invalidating the community. I just needed to vent. Thank you for reading and if you have any advice on why you think this felt bad , or same experience please let me know. Kinda feeling alone . 😥