Clavamox (amoxicillin and clavulanate potassium tablets), USP is an orally administered formulation comprised of the broad-spectrum antibiotic Amoxi ® (amoxicillin trihydrate) and the β-lactamase inhibitor, clavulanate potassium (the potassium salt of clavulanic acid). Amoxicillin trihydrate is...
Be sure to read through this when you get home
https://www.backyardchickens.com/threads/how-to-provide-emergency-and-supportive-care-updated-5-14-2018.1048620/
This will show you how to give med also which is very important.
More than likely stress. But before you take her home ask for some meloxicam and Baytril if she has an infection the Baytril should help and the meloxicam will help with pain an inflammation.
I'd separate her so maybe you can determine whos laying. Well maybe if it's her anyway. That will rule out egg bound.
Like @WannaBeHillBilly says resting is very important if an injury could be a hip. I have a Muscovy female who is 12 yrs old with arthritis. I have tried so many things for her...
A lot of mating going on? How many drakes. Females can get injuries from being mated a lot or if more than one drake is going after her. On the bottom of her foot there is nothing?being sure to rule out bumble foot. Is she laying at this time? Sometimes if egg bound they can be lame if the egg...