I'll bet he was pretty shocked all those months when he woke up to find Lois next to him and pregnant.
This really shows how dedicated Lois is to him. He can't really work anymore, so she is supporting him, and every day she has to explain to him what's going on. He already loved her enough that she was able to convince him in a day that they should get married that day, but the next day he wouldn't even remember that she loves him. I imagine they'd need to send the baby to daycare or have Martha and Johnathan move nearby to babysit since Clark wouldn't be able to learn how to take care of his baby. He'd constantly be a brand new parent.
In some ways this is a very hopeful story, with Lois being there for him and his retaining some small bit of new memories, but it also leaves me rather melancholy.
