There is one mutation that apparently is very common and some doctors don't think (or did not when I was tested) is significant. I have it myself, and the hematologist did not think it needed to be treated.
Re considering malpractice, may I share my experience? There was a doctor whose carelessness may well have led to my children's early arrivals at 25 weeks, four month NICU stays with untold suffering, heart surgery and lingering cardio issues for a yr for my daughter, MRSA for my son, loss of my job, a quarantine that had to continue 21 months, and asthma that will likely follow both little ones for some years. No one will take the case because it is speculative that her failure to order a vaginal ultrasound caused me to miss out on a possible emergency cerclage and a better outcome for my children. Not to be discouraging but please do not pin much hope on a favorable outcome to any attempt to secure an attorney for litigation efforts.
I hope you are able to move forward soon armed with a battle plan for a successful cycle...so sorry the little peanut did not make it this time.