my sow is not acting herself . not moving around much . shes drinking and eating alittle , she doesn't get excited about the food anymore . she has no discharge from her eyes ,ears , mouth . she does move around alittle bit she'll come up to get a rub. about 2 days ago i bedded down their house with straw and through a couple leafs of it in the pen . which the 2 of them tore it up and played like puppys . i did notice the one eatting the staw ( maybe to much?) so could that be the problem . they were both fine 2 days ago please help sorry might be a couple of typo's but in a hurry thanks so much