What is my body doing? Weird opks

I had a miscarriage in September and have had one period since then. We starter ttc again this month and so far my opks have been all over the place. I had a VERY dark opk on the 14th (almost positive) and the next morning they were completely negative again so I figured I missed my surge while I slept. We bded the 5th, 12th and 14th since hubby works away. Today I took another one and it's super dark again but I've also been getting AF cramps while I only get if AF is a day away or I'm pregnant, I'm so confused😭 Did I surge on the 14th?

November 14

Today