Welcome to bb.
I can understand your lonliness and disappointment with the shameful behaviour of your baby's father. I know you must be hurting and I'm sorry that things are not the way you want them to be.
I think you are very brave to reach out for support and I would like to offer a hand if friendship. You are not alone.
Have you spoken with your doctor about how you are feeling? It might pay to have a chat and perhaps seek information about local support services and groups. It might be really helpful to meet other women in similiar circumstances.
How is your physical health? How do you feel about the pregnancy? No pressure to answer here but if you want talk, I'm here.
Kind thoughts to you