Ovulation Peak / LH surge detected

Ch

Hi, I am TTC post blighted ovum and started using ovulation kit to track my most fertile days. Since last 2 times it showed peak but seems did not work for me. I have used last ovulation kit and got pregnant but we lost. I had really high hopes as first time when we tried and same time used ovulation kit and got pregnant. Does anyone have positive experience post blighted ovum got pregnant again? How long time it took to conceive? TIA.