When did I ovulate?

On Monday I had seen the most amount of egg white cm. On Tuesday it was more watery. Wednesday and Thursday it was very stretchy and clear. (I could stretch it in the toilet paper)
 Also, Thursday was the last time I saw the stretchy cm....but my first positive ovulation test was late Friday night. 
Friday's cm was a little stretchy/watery. Today's ovulation test it is still positive. 
I think late Thursday and Friday? 🕵