Confused ovulation. 😳😱😞

Tamsyn
Glow says I should ovulate tomorrow. I have a 24 day cycle and tested on Tues, Wed and today. The test line is getting lighter and not darker to to point that there's virtually nothing today. Had a slight bbt dip so not sure if I missed it or am not going to ovulate this month. Experiencing cramping the last 2 days. 
Tuesday:
Wednesday: