Chances of pregnancy

Kim

So my wife and I have a sperm donor and he’s out of state . So normally I ovulate CD 14 this month I got a positive OPK on CD 18. The only time we could inseminate was CD 15. App says medium chance . Has anyone gotten pregnant that early before ovulation . Last time we did one insemination and it worked but resulted in a miscarriage . Also we did it day of positive ovulation test . So I’m hoping we aren’t out completely this month .