not his baby? 😡😢

So I will try and make this story as quick as possible. Last year in October my partner and I split and I went away for the weekend. I came home and we made a go of things, I then had a period and conceived my son in the November (a month later) to my partner. We was both excited, he's done a supprise baby shower was over the moon when he found out it was a boy etc. Then a few weeks ago I'm now nine months pregnant we had a normal argument and he said he thinks I cheated and it isn't his child. After this obviously really hurt me I worked out the dates with him and scan pictures etc and see it didn't add up so he has to be his!! Today we had a normal argument again... He chucks the he's not my kid in my face again, even tho to days ago I even got the scan people to confirm the dates where right! I'm obviously so so hurt that he thinks this low of me and is excusing me of cheating and having someone else's baby even tho there's no way it adds up I didn't cheat and I'm due to give birth at any moment. Right now me and my daughter have left and I'm staying at a friend's house to clear my mind and hope he can seriously think about what he's playing at. Am I wrong for this? How would you feel and what would you do? P. S he also added he doesn't at all find me attractive when I'm pregnant and for about three weeks he's not really been there or even thanked me for running around after him day in and out pampering him after a long day and I get nothing back