ladies that do BBT please help

Hi ladies 😊
First cycling BBT and I think I kind of know what I'm doing. I was just wondering if logging my temp will automatically sort out my fertile week like it does when doing OPKs? Doing OPKs has been really stressful so I've decided to temp as I'm not really sure if I'm ovulating. I've just started thyroid meds so I thought this would be a easier way to see if I was actually ovulating.  
Thanks xx