Hello,
I think that it is best to quell your concerns by seeing your vet. The heartworm should have been resolved with the treatment you were given. But your dog should still be on heartworm preventatives.
I also think that you should follow up with whomever did the surgery for you. It might be post op tracheal inflammation.




Hello,
The best advice is going to be found at the neurologist, They can provide the best options for you both, BUT, I do not send people to them unless they can afford both the exam fee, and are prepared for the recommended diagnostics and treatment options. You should never feel pressured to seek care and advice, but, it can be costly to treat this surgically.
I would ask your vet about adding methocarbamol. I think it helps with pain and relaxation for the cage rest.
I have lots of information at my blog and YouTube channel if you search my name and Ivdd,
Good luck!