Confused about ovulation

Hello everyone. I have been ovulation testing and got a peak of 2.6 on cycle day 18. Then on cycle day 20 the LH level fell a little at 0.69. Today, I am on cycle day 21 and my LH has risen to 1.2. I am very confused about the ovulation as it is my first cycle trying and amtrying to understand my cycle. Please help me.