The baby wasn't aborted, It will play into the story line at a later date... agggghhh now I'm doing it... It's only a TV show, It's only a TV...
Actually, there were 2 babies in that episode. There was a girl who stowed away on a transport ship to get to the Dr on Galactica, and her baby WAS aborted.
The other baby was delivered prematurely, and the mother (the Cylon formerly known as Sharon) and father (Helo) were told that the baby died. However, that baby, a human/cylon hybrid was given to another woman to raise, and her dead baby was substituted.
Mark