Missed miscarriage- cant stop thinking about about what went wrong

My wife and I went through 2 miscarriage last year. The first miscarriage was naturally discharged after I sent my wife to KKH A&E due to intense pain, but the second miscarriage was a missed miscarriage at week 6 with no heartbeat detected. At the second miscarriage, it felt like we just opened a can of emotion, mostly sad, disappointed, lost and grief. But we accepted it as the time was not right and we encouraged each other. We took steps to have a thorough check for both of us: blood test, karyotyping, examination of the fetus material, which all checks out alright. We moved on by accepting both losses and remembering both unborned children in our memories. Till now, we still keep all the documents and ultrasound pictures for both of them. We also took comfort in the fact that natural gene checkpoint was functional which led to the miscarriage as we avoided bringing in a child that may have potential genetic disorder and bringing suffering for the kid. Also, no dark times persist forever and someday it will be all clear. Fast forward to now, my wife is expecting at Week 14 and baby boy is healthy with NIPT test cleared. Take some time-off if needed. Speak with close friends and family as they can be great consolation.