I got off of her, checked her feet and couldn't see anything wrong. I hand walked her the rest of the way and she favored it the whole way. She did this right after her trim too 8 weeks ago when I tried to canter her. I didn't worry too much as I figured she was just sore after the trim. But this is strange it being sore now. She didn't seem sore when trotting but when walking I could definitely see she was favoring it.
I'm planning on talking to my farrier as all last summer she was perfectly sound being walked, trotted and cantered on the gravel and she should not be coming up lame now. I haven't really ridden her hard until now, but the few times I asked her to canter after her last trim she has refused.
The other problem is that she has been coughing - I think it may just be spring allergies or something. She does it a lot when being ridden though and today I noticed that she had this awful white discharge from her nose at the end of the walk. Is it normal for them to have this in the spring?
Any advice is much appreciated!