Why is my ovulation cycle off?

[GreenEyes87]

I've never had any abnormal/out of the ordinary changes in my ovulation cycle. Until this month. Took an ovulation test yesterday - positive. I also had tons of ovarian cramps, inner upper thigh cramps and lower back pain. I had a tad bit of discharge in the morning that was watery but had a small amont of a clear-white discharge.
Today, I am completely dry. Normally, its ovarian, back and thigh pain for about 3 to 4 days along with the discharge.. What could this be?

Unprotected sex on 17th.
Also, had a positive OPK test this morning, still no discharge. Very dry. Very gassy, constipated, and some heartburn. Not saying I'm pregnant but WHAT ON EARTH could be happening? This is a first for me.

[Clysta]

I know ovulation can be off for any to no reason at all. It's what causes a late period. Im not too sure about the discharge part though. When do you normally ovulate?

[vacuumprincess]

hmmm..  Ovulation kit said positive this morning???  I have never personally used these kits.  I have heard that they can be off... I have heard that you can just miss ovulation with a predictor kit.  was today the first day you used it?  don't you get positives for a few days, but the darkest line is best?   Can you go by your last peroid at all?  how do those dates correspond?
    Sperm can survive in the body a couple of days.  I have heard that some women notice changes in their body right after conception.  
    I am about 7 weeks preg.  I got a "weird" feeling along with cramps & ewcm around
1 & 1/2 weeks before af was due.  Maybe something is going to implant in there!  good luck.