ovulation??

Elizabeth • I am a 29 year old IT Technician, mother of 1, and surrogate mother of twins. Baby #2 due July 2017 💝👶🏽🏩
I'm struggling to map out my ovulation. My cycle in the last 7 months has varied from 21 days to 31 days. Any advice on how to check my CM or how to take my BBT would be appreciated. I'm using an OPK but I think I missed my ovulation this month.