Did I Miss it?!

I usually use opk’s to test my ovulation and rely mostly on them as I have irregular cycles. I had a miscarriage in October 2017, and now that we’re trying to conceive again I’m worried I missed our chance for this cycle!

With having an irregular period, I typically start testing my ovulation around CD 17-18. I tested on CD18 which is the top opk and then again CD19, which is the bottom. Do you think I missed my LH surge which is why CD18 looks stronger?? Or am I crazy? lol

I’m slightly crampy to the left side today, so who knows! Thoughts?!?