Okay, so I took an opk Wednesday which was cd 21 and it was super positive about mid afternoon. I have taken several from cd 15-21 and they were close to positive. What's odd about all of this, I have yet to have any 'fertile' discharge. It has just been super creamy and thick. Also my period was very weird, it last the normal length of time but it was mainly a dark rusty color and light brown spotting. Never enough to even fill a tampon.. And with all the cramps I thought it would pick up. Never did.