I cured a large hematoma on my cats ear with the homeopathic remedy Arnica mont 30. I believe I just gave it once a day, maybe twice. It took about a week to ten days to completely resolved but there was improvement right away which was steady until it resolved. The ear flap returned to normal. In this podcast homeopath Joette Calabrese mentions that in classical homeopathy, Arnica Montana is always used for hematomas. Cost $8.00.
https://joettecalabrese.com/podcast1/podcast-73-my-time-with-the-banerjis/
Hello,
I think it’s ok to wait a day or two to see if this resolves as long as everything else is normal and ok. If this helps I wrote a blog to help is the source of limping. See if this helps.
https://kmdvm.blogspot.com/2014/08/understanding-and-diagnosing-limping.html
Good luck!