Pregnant and can’t tell my family they are non supportive and selfish

My mum is an abuser and my dad let it happen while me and my sisters were growing up, although they live 30 minutes away they are always out getting drunk , they are alcoholics and never offered to watch my first child ever until one night when I met my now boyfriend. They always let me down, they aren’t normal and never stop by for a cup of tea or a catch up . My older sister I don’t speak to as during my mental breakdown she told everyone not to help me and looked up taking my child off me, this all because I had no support and my ocd got bad. My younger sister is married and they have always planned on having a baby but always pushed it back year after year; she announced in October last year that she’s pregnant and is due in June, I told her that me and my boyfriend are also trying to.. she seemed happy then messaged me one day saying she can’t keep being fake happy and slagged off the size of our home, our income, our jobs .. everything to say all aspects of our life are out of whack and it would be wrong to have a baby any time soon she suggest we WAIT until her baby is one year old before me and my boyfriend try,

To me this was random, wrong and distasteful as it was obvious that she wants the attention on her and her pregnancy from the family. She’s admitted in the past to using my abusive mum for her money she pretends to be nice to her knowing my mum will cave and buy her things and sure enough that’s what’s happened, she’s gone from hating her to meeting her and my other sister and they are showering her with meals out, money and gifts for the baby.

I’ve now found out I’m pregnant I’m roughly 3 weeks pregnant and it makes me sad to think I can’t share this with immediate family the same anyone would , my family live close to me and I always tell them when I’m free and they never come by. They have never been supportive and babysat my first child even when I was a single mum and the ambulance came for me they didn’t want to watch him so they are basically not like family at all.

I haven’t done anything wrong and feel it’s bad that they’re made me feel like shit for eventually wanting to spread the news because they are being selfish.