My bitch had a c-section & was spayed at the time, 9 days ago. Seems fine, pups nursing, she is eating, drinking, urinating, bowel movements soft but normal for post delivery. She had a bit of normal discharge for 3-4 days the stopped...today bright red blood, found a dime sized clot...she seems fine otherwise, and is caring well for the pups. Was on cephalexin for a week post op. Should I be concerned ?