mixed signals- nothing lines up!

Tara
Alright ladies, I am so confused. I've been using two OPK this month. Clear blue advanced and a cheap walmart stick. Never once have they matched up. On days CB told me peak (cd13) or high (cd16) Walmart was nonexistent. I think I may have ovulated later this month as the Walmart brand finally was positive. Today at CD21! With ewcm all weekend when I was out of town. 
Had a tiny tiny tiny bit of brown mucussy stuff yesterday and I though it's gotta be late ovulation???  Not only that but my chart is all over the place. (Mind you I've just finished a whole 30 and been drinking more) 
Can anyone make sense of any of this????? This is so unbelievably aggravating. Literally nothing lines up. Temps to OPK to cm and cp it's all over the place!!!!!!