Not right now, no. You have to keep looking, as they do pop up every now and again (I check from time to time but not much luck).
I scratched that itch with a girl in Edmonton who was about 7 months on. And it was fantastic. Very very erotic, and worth the extensive wait and search. She's not fat - she's pregnant. What a difference!! Try all the ads and the sites in Toronto and Montreal as well as Ottawa. It doesn't happen often but sometimes. You may also want to email a few agencies and let them know that you are interested in that. From time to time they may have a working girl who gets pregnant and would be interested in still earning some cash, but doesn't keep working for whatever reason. I'm guessing though.