HI Mummy,
I believe the rule with opk's is that the test line has to be equal in colour or darker than the control line to be a positive. Two lines on an opk does not mean a positive test result. The test line has to be darker than or equal in colour to the control line...
If you got this today that indicates your body is having an LH surge and that you will probably ovulate within 12 to 36 hours.
Lots of love and baby blessings,
Deb