Not sure where to post? Advice Ladies?!

So my husband and I filed for divorce in Aug. I moved out in Sept. We have had sex several times since. 🤦‍♂️ Stupid I know. Don’t judge. Our divorce finalized 12/9/22. However!! I found out I’m pregnant 12/3/22 and told him 12/5/22. We both knew before the divorce finalized and didn’t say a word otherwise they wouldn’t grant the divorce (here in MO). Is this something we need to report to the attorneys and the court? Will it mess up our divorce? He was granted a 30 day stay for his execution of judgement so I’m terrified that it will void our divorce . Any advice ladies?