I have a cocker spaniel who has had various limps over the years. She is nearly 12 and the worst was when she damaged her cruciate ligament in one knee. Thankfully it didn't rupture and she just had to rest and take Metacam, but I knew she was bad just watching her try to go to the loo and hid herself under a shrub in the garden in the rain😢
She has had others where she's had a bit of a limp and stood with her paw held up but has managed to jump on the sofa. We judge how to treat her depending on how she is presenting, but this has been learnt by us over several years by reading her body language. If it's particularly bad she doesn't stretch properly, or at all, or just does her front or back half.
Most of the time we have done a few days rest with no walks, just out into the garden for toileting then short lead walks up and down the road to a nearby field (10 mins max). We carry her upstairs at bedtime and have now made a cushion for her to get up and down off our bed a bit easier. Mainly for me when I had a recent abdominal surgery but we will be keeping in place.
The cruciate was a vet visit who first thought it was arthritis but after an X-ray they said it was her cruciate.
A recent one was a limp which then ended a few days later with bloody footprints all over the downstairs! This was a Saturday and the vets were closed and as she seemed ok in herself I just phoned the vets first thing Monday and didn't feed her in case she needed sedating. Vet couldn't see anything wrong apart from a bit of a swollen digit.
Basically, if she is off her food, shaking or screaming in pain or something looks odd then I'll call the vets but if she is just looking a bit sore then rest and no walks. It usually rights itself in a day or so. I do wish vets could let us have pain meds like we can have paracetamol or ibuprofen in the medicine cabinet just to help them get some rest and get better quicker.
I'm glad yours is feeling a bit better. The licking might mean she has something in her foot and if she has hurt her nail bed or cracked her nail you need to cover her foot to stop her licking it. The saliva can cause an infection (something I read about when we had the blood incident).