Why is pregnancy so isolating.

im 31 weeks pregnant and this whole time i have felt so alone like i have no one.. even when around people i still feel so alone and just wonder all the time is this feeling going to go away or is it going to just get worse after i have my baby? i am always left out of everything due to being pregnant and im high risk so i cant work or do things i want. it just sucks that i get treated like im incapable of things just because im pregnant:/ it would be nice to be invited to things you know? like atleast a offer or something but instead im sitting in my house all day just trapped in my mind it feels like, i cant imagine how much worse its gonna be after I have my baby. does anyone else feel this way or am i crazy?