When I got home from work last night our yearling filly was on the wrong side of the fence.. in with my three year old filly and my gelding.  There were a couple of rods knocked off the fence (sucker rod fence) where she had to have gone through.  I put her away and she was willing to walk and trot around, but acted like she was just a little sore all over.  I checked her over for any cuts or swelling and didn't find anything.  I figured she was going to be a little sore if she got caught up in the fence so I turned her out.  Today she is a lot more sore, I would assume she's stiffened up all over, and doesn't want to move around at ALL.  No cuts, no heat, no swelling anywhere on her entire body.. I massaged her all over.. no flinching from sore spots anywhere. 

I don't believe she got kicked or picked on by the bigger horses, but don't know what exactly might be wrong?  You can tell she's off in her back end, doesn't want to stride out at all to move.  She's not "limping" at all, just moving real slow and unwillingly.  Think pulled muscles, maybe?  Just looking for any ideas or opinions.  She's eating and happy otherwise.  Thanks.

That's what we thought we might do.. see if we can relieve some pain and inflammation for a couple days and see how she is.  I just wanted to make sure I wasn't forgetting to check something, etc. 

Thanks.