Confused on charting & logging. Opinions please

I'm really confused. I logged my temp like usual this morning but then my app changed my ovulation to the 16th... said it was confirmed by my temperature. But I didn't get my peak until the 17 that it may have been fluctuations luteinizing hormone. is that a good thing bad thing? I didn't feel any cramping on the 16th but I did on the 18th. Should I be worried that I'm out this month?

I’ll post pictures of my chart and LH test strip. Any advice would be helpful. 😌

I changed my ovulation day back to the 18th, because that’s when I’m guessing I ovulated. opinions please?