dont know whats going on

I am currently ttc and on cd 14. The day after af ended i had ewcm then i went dry. Me and SO bd'd the day after the ewcm for two days and now im having some symptoms i get before af. I have been taking opk but theyve been negative and becoming lighter. Im not suppose to O until around cd 16-20, but ive been having those twitches, flutters, and weird movement feelings like O. I dont know what to think or when I will O or if i O'd already. I also included a pic of my temps which has been erratic.