Well done with enough medical technical stuff to make it realistic.
I kept waiting (and maybe he will still) for Clark to yell how can you NOT hear the heartbeat. I can hear it plainly. At this moment I expect his secret is more important to Lois than it is to him. I was expecting him to have a more overt wish of his own in this part though. I guess we have to wait until the last part.
Well played ending for the second part in a row.
Mike