I bought a preg sow. She is due this week. So far she does not even look preg. She is not even bagging up. She does not have any obvious signs of being preg. Are there tests or something I can do to make sure she is preg. I plan on buying a young boar in the late summer to fall. However I can get a good deal on a large black right now. Can someone suggest a preg testing method? The person with the lrg black suggests leaving the sow alone until the end of the month before worrying bout it.