BBT accuracy, ovulation and PCOS

Christina
So this is my first month officially tracking basal body temperature. I need some advice tho. If there is a consistent temperature shift of .5 and higher temps from what I've read that means I ovulated. If I get that does that mean 100% I ovulated? I'm just a little worried about accuracy as I know OPKs don't work for women with PCOS so I've been sticking with BBT. Thanks girls  Here's my chart as well