Strong Positive OPK 6 Days In A Row ???

I've Been Taking ovulation tests For Few Months And Every Month I Get A Strong Positive On 16 Days Before Period then the next day my test line is lighter then control line or there isn't a test line by the next day but I've had Clear Positive ovulation tests 6 Days In A Row ITS TO EARLY TO TAKE A pregnancy test but has anyone else experienced this ??? I called 3 different facilities and every nurse said sounds like your pregnant but each nurse Said Its To Early To Take A Test. My Cycle Has Always Been Pretty Regular. I Started Testing Few Months Ago And Checking My CM To Get To Know My Body Better But Never Had This Happen Before. Has Anyone Else Experienced This???