Ovulation testing- pics included

Question-hopefully someone will answer today. I took an ovulation test Monday night and it was positive- just as dark as the control, bd'd Tuesday night, and then last night had this pain in my uterus just like ovulation pain, which I had pretty bad Monday, which is why I took the first ovulation test. I decided to take another this morning and it came out positive, darker then the control line. Here's a pic