A 6-year-old Miniature Schnauzer was spayed 6 weeks ago still lactates
Channel: Dr David Sing
Date: 2015-07-21

23 May 2015. Pyometra. Spayed by Vet 1.

Around early June 2015, the dog was lactating for around 4 weeks
, 
27 June 2015. Vaginal discharge once.

Around 13 July 2015, vomited. Vet 3 prescribed bismuth. Dog passed bloody stools, said by the Owner to be a side effect of bismuth.

16 July 2015. left ovarian remnant reported in an ultrasound by Vet 2. Owner is worried.   

21 Jul 2015.  The owner consulted me with worries about stump pyometra as she had done her internet research well. 
The dog passed out a foul smelling gas on the consultation table. The owner believed that Juroclav would resolve this problem and had got some from a vet. She asked about surgery and hormonal injections or tablets. 

I  advised her to get the gastroenteritis treated as the dog is not well. To wait till the next heat.  No anaesthesia must be done while the dog is unwell. 

Lactation and vaginal bleeding can occur after spay in some dogs but will not be present after cessation. So, it is wise to wait and see. The dog is said to have heat on February usually.

Pyometra occurs 1-12 weeks after heat. 
This dog had pyometra and was spayed on 23 May 2015.
So, the timeline for the heat 12 weeks earlier would be around 23 Feb 2015.  

False pregnancy with lactation usually occurs 2 months after heat, but there is a variation as no two dogs show the same duration. Ultrasound seem to indicate that there is an ovarian remnant of around 6 mm across behind the left kdiney.
.