flexor tendon

My horse came up to the barn with a small limp,didnt see any thing until I felt her left leg and at the bottom of her flexor tendon was swollen and tender to the touch . She runs in the field without a limp but when she walks, she limps .
The only thing that has changed was the fairrer said she wasnt balanced and took as much as he though he could ,he said she will be alright to go and ride her and I did ,3 days later she showed up lame .

I don't think the hoof is the problem and its not swollen that much about the size of a grape its not real hard to the touch

What steps in care should I start with, should I wrap ,not wrap put topical pain, anti swelling med or let it go by itself wait and watch , call the vet .

I don't want to call the vet everytime she bobbles or limp but can't let her get worse
So im asking uall what steps do I do, thanks

When I have one that has swelling and heat below the knee, I slather both legs (front or back) with Ice Tight (mud), wrap with wet brown paper, like grocery bag paper, cover that with plastic wrap and standing bandages. I leave that on between 12 and 24 hours and then rinse off. I also use hydrotherapy. 10-15 minutes of cold hosing on the affected area.