Soooo confused πŸ€”πŸ˜©

Veronica

Please someone help! So my af was due on last Monday, no sign of it coming in. I've taken pregnancy tests and they come back negative. I took one today and it was negative! Then for the heck of it I took an opk test and it came back way positive. As shown in picture. What does this mean can I be in my fertile days without have gotten a period!????