Ovulation test

Lisa

So I track and on my fertile days March 18-19 we’re the highest percent chance of getting pregnant. Started my period 19 days late, took an ovulation test last night.. showed peak! But I am on my period three days in.. cycle is about 5 days..and I’m just wondering could I be pregnant even with starting on the 2nd this month.. and if no, is it possible to peak and become pregnant when on period??!