On Ramsay Street, medical miracles are a daily occurrence - look at Susan Kennedy, when was the last time she mentioned her MS?
I'm sure Kate will sleep with Kyle and then fall pregnant and Georgia will then discover it and be angry at Kate for five minutes before marrying Kyle. It's Neighbours after all.
Kate had a one night stand with Kyle then missed her period. She thought she was pregnant and didn't know if Kyle or Mason would be the father but Karl told her she has premature ovarian failure so the chances of her having kids is basically zero. Since she was diagnosed, the way they keep banging on about medical miracles and how women can still have a chance of conceiving has got me thinking she will probably end up pregnant at some point.