I've sort of lurked around this board but wanted to share my "success" story:
I'm 39 & BFing and this was our 4th cycle trying. PPAF returned after I night weaned at 12 months. She's been coming every 29 days and CM was there so I was sure I was ovulating (and when). We DTD starting 5 days before O - every other day, then the day before, the day of and the day after O. I wasn't feeling PG, but tested yesterday so I could go to a party last night and have some wine (just wanted to make sure I wasn't PG). And there it was

! No wine, but I'll take baby #2 any day
Good luck to all you mommas - it can happen to you!