Ever heard of the saying.....never ask a question that you do not want the answer to?
I think knowing the answer to the question as to whether the OW is pregnant is pretty darned important:
1) It may influence your willingness to stand. For some people that's a dealbreaker, for others it's not. But if it's a dealbreaker for you, better to know now and incorporate that into your plans re: separation or divorce
2) Tactically it may affect how you see h's behavior or how you approach him on certain things.
3) Just asking may put a seed of doubt into H's mind about the wisdom of his current path (i.e. if he ran away from home to avoid responsibility, he may not have thought about the possibility of OW saddling him with NEW responsibilities just like his old ones).
