Confused????

Vanessa
Okay so I've been doing ovulation tests since last Monday (12th). I'm now very confused. On Monday the lines were even. Tuesday and Wednesday a definite negative. On Thursday was negative, the test line was strong but not as dark as the control line. Friday the same except a little darker. Saturday they were the same color. I posted the picture on here and pretty much everyone said it was positive. Sunday the test line was darker than the control line. Then today I took a test and the test line is extremely darker than the control line. What is going on with my body?? The one with no date was the tests from Saturday.