Injury Anyone have experience with sprains?

I am sorry to repeat myself but no one replied to my other posts and I am really hoping to find someone who has had experience with sprains with their guinea pig/s. Mine had an xray and no broken bones or fractures were found and I still have no idea how she got hurt because she was never dropped and she does not have things to jump on in her cage but her leg (the vet said it's near her carpal area, sort of like our wrists) has been swollen for almost a month now. The metacam helped with the pain. She started putting pressure on it more, but the swelling never really went down at all. She goes for a follow up in two days but I just wondered if anyone knows how long a sprain takes to get better. It has been almost a month now, if not longer, because I am not exactly sure when she hurt it, but she went to the vet for the xrays about seven days after she started favoring it.

She is eating fine, but not drinking much at all if any from her water bottle.. I have been giving her water in a syringe. I guess she is getting some in her veggies, though. The water bottle is fine, it comes out like normal. She comes out of her hidey pouch to eat and munch on hay, but other than that she is more comfortable and spends a lot of time, since her injury, in her pouch. I have to clean it out often since she just defecates in it. Besides the leg and not drinking much she seems fine. I do worry she spends too much time in her pouch, but as I said, with her leg I think it just feels better to her. She puts a little pressure on it sometimes, but usually still hops on three legs. I think she also likes her pouch because it keeps her upright when she lays down. Her back legs end up sticking out since her front leg is messed up if she lays down anywhere else. She is stable as far her her health, but I wish she could get back to her old self even if it means keeping me up all night.

Thanks everyone.