Ovulation tests

My last period was May 15th-19th. 18th and 19th were both light. I started experiencing right pelvic pain on May 31st.. I took a ovulation test that day and my test line was almost as dark as the control line. I took another on June 1st and my test line got lighter. Another test on June 3rd .. just as light as June 1st. Took one more ovulation test on June 5th and the test line was a little darker than the lighter ones but it’s still light. I took a few online ovulation calculator and they all said my window is from June 1st till June 6th and my ovulation day was the 6th. But yet my test only got lighter.. I’m starting to think I missed my window? The box says No LH SURGE according to my results? But I’m not sure. What do you guys think? (We have had unprotected sex since May 15th till today..Pretty often.)