Boyfriend finding out

My boyfriend and I have just found out we are having a baby, our first child! He has just lost his grandad to cancer last Friday, and is in a bad way! I know this hasn’t come at a right time but I am over the moon about being pregnant. He said if I keep it he will leave me and him or his family with have nothing to do with it, I am not having an abortion full stop! Do I give him some time to come round as he is going through a hard time with loosing his grandad or do I just say go then..