I feel left out...

So I really need some advice, This has been on my mind for A WHILE, So I've been dating my boyfriend for 2 years coming up 3 years i haven't met his family only his older sister (weird i know) , I found out that I was pregnant the 10th of December 2025 due in August!! But his family haven't really bat an eye to the situation or even tried reached out to me, But they ask my boyfriend about me and how i am but none have full on tried to make contact with me (they know my facebook), I spoken to his older sister about when I was in hospital for the pains I was getting after she told me I can speak to her whenever and she left me on read so I havent bothered to message her again. He's in a big family group chat with everyone, His sister in law is also expecting a baby in August too but my boyfriend tells me what they're saying in the group chat and that they ask the sister in law about her pregnancy, asking pictures of her bump to do gender predictions, planning on last minute hoilday trips before her baby is born, This is her second baby, This is my first baby, and I feel so left out, I've tried meeting his family they live a few hours away by train this was last year in summer, They had a wedding that I was a plus one to and I had a penicillin allergy so had to go home and get taken into hospital, then when I found out I was pregnant we where going to have a family meeting but my dad got ill so we had to cancel. But none of them have had interest or thought to visit me and my boyfriend especially now im pregnant and have been dating him for over 2 years. I'm just scared when baby is born they'll all want to come down just to meet baby. Which honestly I would prefer to meet them first as I dont want my baby near 'strangers'. I'm struggling to understand how I am feeling, its just sadness and rejection and im not sure what the next step is...