HELP!!!!

I'm sooooooo confused right now!! I'm only on CD 6, fourth day taking clomid. I've been super bloated today and have a weird pressure head ache. Also just had MAJOR EWCM, like...a lot! Can you ovulate this early in the cycle?!? I'm so nervous I'm missing my shot right now but I don't have to pee and can't take an ovulation test yet! If I BD right now will that affect the opk???? Help help help!!!