It's not necessarily.... especially if you're bf'ing. If you're bf'ing exclusively, you may not be fertile again for a LONG time! Took me ten months to get a period again after one of my kids! I think people say this to highlight the fact that, if you're not bf'ing, your fertility will return to normal pretty quickly after giving birth. So yes, it's possible to get pg again the first time you ovulate, which could be only a couple weeks after the birth. I did know someone who went to her six week pp checkup only to find she was pregnant again, so it can happen, but it's not necessarily so under all circumstances!
at 12:03 AM on Feb. 1, 2010