My female dog started her heat yesterday but did not start when i was home it was when i was at work, There was a pit lingering around the yard but I dont think they got stuck because she dont look more swollen then what she is suppose to be and not bleeding as heavy. She has never been with another male dog so my guess is that she might of put up a fight. Does anybody have any ideas. There was no time for them to have to get stuck only because my brother n law spot them out and she was barking at him.