Hi, i have a 22 month-old limousin heifer that had been in with a bull ever since she was born (not related to each other at all), we sold the bull in October (2011) and he had defiantly got our other cow pregnant. (we only have 2 right now) she hasn't shown any signs of estrus for a long while. she is acting the same as she always has, sweet and a suck up. she is also very fat in the stomach, but we are not sure if she is going to calf or is just fat. she also has been getting a couple spots where her hair isn't as thick as in other places near her shoulders and hind end, could the other cow have been riding on her because she was coming in to heat? also our cows usually calf from the end of march to mid-may if that helps