Don't go
(sez that in a great britain andy voice)
Seriously tho amy don't go tho, i did alot of reading up on breeding be4 i concidered giving my female a litter, and i also got alot of advice from very experienced top breeders of the studs i used for my female, but i must admit, I never heard of domesticated females doing that, except in the wild lol, and my female did'nt do that either, If she did i prob would of did the same as you amy, and thats ask for advice just incase it was something to worry about, so i myself think you did the right thing by asking, because if you did'nt ask you probs would of got moaned at for not asking if it had been serious.
It does'nt mean u did'nt put less effort into getting info be4 u bred ur bitch because u did'nt find or was'nt told females do that, because i did put alot of effort into it be4 and after, But as i said, i did'nt know that either.