Please leave immediately. You are in the most unhealthy relationship with a narcissist who probably makes you think you are nothing without him.
It will not get better. He will still go after other women. He will still ignore your needs. He will ignore the needs of your child. He will never give the love you deserve. Dear sweet lady, get the hell out of there and never look back. Do not waste another precious day on this man. You and your child deserve so much more.