Why Is My Senior Pug Trembling and Lethargic After Mating? (Vet Answered)

ℹ️Jami asks about their dog, Lucy
🗓️Asked on 18 February 2026
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This question has been answered by a vet

Dr. Karyn Kanowski
Dr. Karyn Kanowski BVSc, MRCVS

Small Animal Veterinarian

Dr. Karyn is a small animal veterinarian originally from Australia, now based in the UK. She holds degrees in Veterinary Science (2010) and Zoology. When not helping pets, she tends to her 5 cats, 5 dogs, and garden!

The Question

I am currently not in the best living situation I ended up rescuing a 7 yr old pug when a friend passed im not sure if she was spayed she does go into heat I ended up in jail for 4 days for a driving infraction and she was in heat a chihuahua got stuck with her and its been about 3 weeks all the sudden shes trembling not eating sleeping alot almost ethnic wont get off the couch seem to be acting wierd

Quick Info about Lucy

Age: 8
Sex: Female
Breed: Pug
Weight: 20
Location: United States
Dr. Karyn Kanowski
Dr. Karyn replied on 19 February 2026

📹 Vet's Video Reply (scroll down to see text answer)

Hi Jami,

Thank you for writing in. I'm sorry to hear that you're not in the best situation at the moment, which has obviously been made even harder with another mouth to feed (even if that mouth belongs to a very sweet Pug!).

With what you've described, my number one concern, with the timing of Lucy's season and the signs she is showing now, is that she may actually have an infection of the uterus/womb called 'Pyometra'. This is a very serious and potentially life-threatening infection, and I'm afraid that the only course of action is to have her checked over by a vet ASAP.

I understand that you are likely concerned about costs, and I have included some links below that might be of use, and it would be a good idea to make some enquiries at your local vet clinic and local charities, to see if they can help.

As Lucy's condition is an urgent one, ALL veterinary practices have a duty of care to provide immediate first aid, so I would urge you to make an appointment today. They can then talk to you about treatment options going forward. If you feel that you aren't in a position to get Lucy the care she needs right now, you may even want to discuss surrendering her. I know this is unlikely to be the option you'd like to take, but depending on your situation, it could be what is best for both of you.

I wish you all the best of luck,

Dr Karyn

My Dog Needs Surgery and I Can't Afford It

What Is A Pyometra?

Disclaimer: The advice provided here is for informational purposes only and does not constitute a medical diagnosis. Always consult your local vet for emergencies.
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