why do i feel my bf family doesnt like me

hey guys idk why i feel my bf family doesnt like me. idk if im just feeling insecure or if like im overthinking. we have been together for 2 years and ive had incidents with his cousins where they have said dumb side comments, they literally dont say hi to me and he never invites me to go with him places when they are there. today i felt that his sister was very distant and it upsets me because ive gotten to know her alot and i could consider her like a friend. idk maybe im just overreacting but i have had thoughts of ending the relationship because of these emotions. maybe my hormones are crazy because i am on the pill? and im gonna start my period