Are you sure they were all positive and not just darker than you were getting when ovulation was not near. I get close to positive (test line is slightly lighter than control line) for a few days on my OPKS some cycles. THe test line has to be as dark or darker than the control. Almost as dark is still considered negative, even though it is dark.
Many days of a positive LH test is indicitive of PCOS and means you may not ovulate. I know that sounds weird, but it is common for those with PCOS to have this happen. I had that happen before I went on Clomid to get #2. I used to get 4-5 days of positive OPKs per cycle.