Are you thinking of Medical Miracles by Alicia U? In this story Lois and Clark are helped by HG Wells and Dr. Clark Kent and Dr. Lois Lane from another universe. The doctors are both medical bioengineers, and Dr. Clark is also a physiologist. Dr. Lois is pregnant. Mr. Wells brings the two doctors with research to resolve Lois & Clark's fertility problem and also to protect Clark from kryptonite.
There's also a sequel Medical Miracles II: Serendipity

Last edited by cuidadora; 07/27/14 11:00 AM. Reason: correct typo
Cuidadora

"Honey, we didn't care if you were a Russian or a Martian... You were ours... and we weren't giving you to anybody." ~ Martha in Strange Visitor

"A love that risks nothing is worth nothing." ~ Jonathan in Big Girls Don't Fly