OK...got a newbie question here. Have a handful of heifers that are bred. Should be about 3 1/2 months bred. Well, over the past week I've noticed that there are 2 that are riding others, and 1 who was getting rode stands still while being rode. I am getting them palpated ASAP. I've check for bloody discharge, etc. and nothing. The 2 that "were riding" are extra red and puffy. What is your opinion on this? Thanks for any information!