I liked this, but there was lots of focus on the abuse Jamie suffered when he was just a kid (locked in the attic from age 12). That was a bit hard to read about. I can do abuse scenes, but when someone is only 12 and being locked up, I get all teary-eyed.
I did like how Jamie was rescued and finally happy together with Ewan, his alpha. But I did want a bit more relationship development. They were kind of stuck after the claiming and the knotting. Nothing much happens between them after that.
Still, this was a decently written mpreg.