What’s wrong with me?

The major problems started when we found I I am pregnant. I am 13+3. I am happy I’ve been told I could t have children for years.

Anyway my boyfriend of what would have been 2 years in 18 days went off the rails and said he didn’t want the baby. I have him a few weeks and then moved out of his and back with my Mum (1 hour away). When I moved I was only going for 3 months to help out on my families farm. Or so I told him. Since then I’ve had time to think and I know what I want but him on the other hand has gone really strange. I found out a week ago that the day before I moved he added himself on a dating site. He says he has been hacked I don’t believe him his number has been given out over it and there are some events that has happened that no one else would know. He still now says it wasn’t him. He says that he has not met up with anyone or slept with anyone else which tbf I do believe. I don’t believe that it wasn’t him on the dating site. I have been to see him to talk about the baby. The scan dates and that I would like is name on the birth certificate I stayed the night. I thought things were a little better but he’s ignored me and not really said much since. He said he’s not sure if he still loves me or not. My problem is all I can think about is him, everything that comes up has something that reminds me of him or something. I can’t see my life without him I love him so much. Why am I like this? Anyone else had someone do this to them? Is he just scared of having a baby? Do you think he has cheated? He says we are still together but if we are why can’t he show it?