Symptoms of oral thrush. A symptom is something the patient feels and reports, while a sign is something other people, such as the doctor detect. For example, pain may be a symptom while a rash may be a sign.
Bleeding Stage. The estrus cycle has four stages. The first stage is called proestrus. This lasts approximately 10 days and it is during this stage that your dog will bleed from the vaginal area. This is your dog's preparation for pregnancy phase, but she will not want to mate with a male during this time.
Once estrus begins, it may take awhile for the cycle to become regular. Some dogs can take up to eighteen months until their cycle becomes regular. Itâs a good idea to keep a record during these early days. Once it does, the average is about every six months. Smaller breeds may go into heat more frequently, as often as 3-4 times a year.