clomid and ovulation

Andy
So I took my last Clomid pills on Tuesday 5th April CD 8. The following day CD 9 I started cramping they were very strong and occurred throughout the day. Next day CD 10, cramping continued though no t as strong. Then on CD 11 just one time felt very very mild cramps for a second. I swore I had ovulated then as all the cramping subsided from CD11, and noticed a lot of creamy CM on panty liner.
Then on CD13 I notice watery CM and quite a bit of creamy CM. The following day;CD14, I got a surge of EWCM, for the whole day every time I would use the washroom, there was an unusual high amount of EWCM on the TP. 
I'm so confused as I thought I had O'd on CD11. I normally O on my own, every month and thought Clomid would have made me O earlier, so I welcomed the cramping as me O-ing, with much BD-ing. Now i'm wondering did the cramping signal and impending O, that would occur almost 4 days later? Can one really have O cramping happen so much earlier than the day they actually would O? I was always made to believe that O-ing would take place at 24 hours after cramping.
BTW I do not temp, so depend on cramping to alert O.
Sooo, has this ever happen to anyone of your ladies who have taken Clomid?