Hi! My female labrador (2 year 4 months old) had her last heat on June, 2024. From Yesterday I can see slight amount of blood on the tissue after dabbing post her urination. Also, the spots on tissue are not observed after every urination. But today morning as I was cleaning her I could see blood in her vagina. She is not leaving any spots wherever she sits as of now. Could this be the onset of her 3rd heat?