My advice (which I'm not sure how to say in a way that does not sound condescending, so please know I'm saying it from a position of concern and support) is to stop worrying about your baby daddy. Stop giving him the attention he obviously so clearly craves. Stop spending so much of your emotional energy thinking about him or how to handle him.
You are going to have a baby. The time between now and when your baby gets here is going to go by so fast. You have plans to make, you have your health to look after. You are going to welcome your little one into the world and you're going to realise immediately how much you need to grow up into that role of mama.
There are resources out there available to women in your situation that can help you if you are concerned for your safety or in need of counselling or other support. Speak to your maternity care team and start planning on how you can get access to those resources.
As recommended by others, you may want to take a break from social media for a while. And you may want to consider speaking to legal counsel on how to plan for when the baby arrives and what happens next.
Lastly, don't let all these comments about termination or telling you how to address your baby daddy get you down. Occasionally we find ourselves in situations where we speak before we take a moment to try see things from some one else's perspective.
And for anyone that may not be aware, the United States is changing abortion laws across many states. Options are no longer available to millions of women and girls. In some states this is the case even if they are the victims of assault. OP has clearly stated she would not terminate regardless, but thought you should know this is no longer an option for a not insignificant number of Americans.