Please help me make sense of this (it is long so be warned)

On friday I had a positive OPK and then again on Sat with Clear Blue (the test line was darker that the control line - I showed it to DH who agreed that it was a definate positive) and I had fertile cm ov pains and it is when I usually ovulate and my cervix was open. Great Bd was timed perfectly. Just to confirm I did a OPK on Sunday and it was negative.

SO today I have had lots of CM (not fertile no stretch there at all), my cervix is open and I have ov pain so I tested again and guess what another positive, so I did another test and again positive - I then used my last two OPK's (different brand) and they were not positive but the lines were almost as dark as the control line.

SO DOES ANYONE HAVE ANY IDEA WHAT IS GOING ON

Im going to bed tonight and tomorrow and tomorrow night (I just hope that if I am ovulating that it will be enough after 14 cycles I am getting a little frustraited)

Is it possible to ovulate twice