Missed/late period and late ovulation

I was due my period on the 9th of July but it’s now gone over. I took an ovulation test on the 11th and it showed it was nearing peak and then peaked later on in the day. I wasn’t expecting it as my period still hasn’t come. I have tried to conceive on the 11th but now I’m experiencing cramps similar to what I get when my period is coming up. Has anyone experienced this?