Should I 23F be concerned that my boyfriend 27M doesn’t invite me to any of his families holiday gatherings?

My boyfriend and I have been together for 3yrs. I’ve met his immediate family aside from a few siblings and grandparents. Everyone seemed polite and I never got the impression that they dislike me but I’ve only met them once at the very beginning of the relationship. I didn’t think much of it the first year since we were both going to our own respective family gatherings but by year two it felt kind of weird that he wouldn’t at least invite me. He knows I’m extremely uncomfortable with social situations especially meeting new people so I kind of chalked it up to him not wanting me to feel uncomfortable but at this point it’s been three fourth of July’s,Thanksgiving’s, and Christmas’s that we’ve spent apart. He’s also aware that all my family lives very far so I end up spending the holidays alone at home.

It wouldn’t bother me so much if he at least invited me and gave me the opportunity to accept or decline. Now I’m having increasing anxiety since I’ve spent this thanks giving alone all day(he didn’t return until almost 12AM), Christmas is coming up and it’s sort of a tradition for him and his siblings to stay the night at there parents house on Christmas Eve and spend the whole Christmas Day together. I’ve got awful abandonment issues and not being able to easily go see my family as much as I want guts me. Part of me feels like I could just be jealous of their family dynamic but it also feels hurtful like I’m not important, or possibly embarrassing to him around his family, I’m a big and tall gal and he’s a short and skinny guy so I sometimes wonder if he likes me in private but not enough to be seen out with. (Im lucky to go on 3 “dates” a year) He’s super kind and other than this he’s never intentionally hurt my feelings before and is always understanding and remorseful if there’s any misunderstandings. I just don’t know how to express this without sounding whiney or like I’m taking him away from his family.