Thank you for that info Ryle!
What I noticed last night while at the barn she has a lump right by her flank its hard and seems to bother her! I was doing the exercsises the massage therapist showed me to work on her with to see if it was just a strained muscle or not but I didnt notice this bump before. She also has a few kick marks in the same areas as the lump so that could be a possibility as well! Also someone said it could be a bug bite but not sure if a bug bite would be painful?