Positive opk?

Me

I took two OPK’s today 11am & 4pm and both negative. I’ve had some cramping and lower back pain this evening though so thought it wouldn’t hurt to do another test - and it’s like this! I’ve never had one so dark! Is this a positive or do you think it’s just a positive that ovulation is near?

My last clomid pill was 5 days ago so it’s very exciting!!!!