dogs first cycle, complications

My dog is a year and three months ols and started her first heat r days ago, yesterday she seemed a little sluggish so i gave her a vitamin... Shes always the first one up to eat but this morning she slept late and practically had to force her up. She seems to be in alot of pain,slow moving and almost looks like shes limping. Still has a strong appetite and drinking, no diarrhea

Thanks,
Billy=15yrs in dogs

[Cliff Redford, DVM]

Great question.
First off, this will be her second or third heat. Heat cycles start at 6 months old. This is potentially a uterine infection called a pyometra. It is very serious and needs a veterinarian's attention asap. She will need to be spayed.

[pittfallin]

The first heat must have been completely silent as i sever saw and my male never gave indication.... Gave her pedialite and antibiotics for the past couple days and shes doing fine.. Thank you very much for your help