Not necessarily. Not all women show until towards the end. I, however after watching the series again, will concede that you are correct as I believe Rory was going to a doctors appointment in the scene where Luke and Lorelai were in the living room and Selene was on the stair case and they were talking about the…

Rory also had a one night stand with the Ewok guy…so no telling who the father is… It would make an interesting story if it were the one night stand and not just Logan's illegitimate child, although daddy Huntzberger would have a conniption fit for sure!