MY BOYFRIEND IS HAVING ANOTHER BABY POSSIBLY!

Me & my boyfriend has been together for close to 2 years. I am 7 1/2 months pregnant now and we had broken up for about 2 months or so and now he is back saying that he loves me he misses me and wants his family back BUT someone Is pregnant & It MIGHT BE HIS. What am I to do I love him I want my family we weren’t together when it happened but how do I deal with that? Has anyone else been in this situation and stayed or has any NICE HELPFUL INPUT ON THIS SITUATION? What do I do.