I feel for you! Reading that was like me reading my story with my ex, but he left for the first time at 6 1/2 months and again at 7 1/2 months coming back when she was born just to leave again.
I can’t describe that utter disappointment and pain of feeling so alone! Knowing you’re carrying this bundle of joy and they don’t seem to have any interest at all! And drink and whatever else becomes there comfort and constant. Whilst you’re struggling to sleep, eat and your future well, it isn’t what you had in mind when you planned to have a baby together.
I can’t give you advice, all I can say is follow your gut not your heart…. and when that baby arrives, they and your maternal instinct will show you what your meant to do for the best xx