Wife Is Pregnant Mid Divorce. What Do I To Do?

As the title states, my wife told me she wanted a divorce a few months ago. Just a couple weeks ago the papers were finally all signed and submitted, but due to state laws it won't be finalized for a while. At no point during this process did she ever tell me she was pregnant. I was sent screenshots recently of her reposting videos on social media about hinting at being pregnant as well as being contacted by some of her family and a few other people telling me the same thing. She has been seeing a new guy recently as well. When I confronted her about it she became very defensive and wouldn't give me a straight answer. Now if she is pregnant, I'm very positive the kid isn't mine due to certain contraceptive methods I used. It's hard to think clearly during all of this, and I'm just looking for another persons opinion. Thanks.