Should I test?

Verity
So this is my temp chart this month. Cd34 and no period. Glow suggested ovulation cd19 although temps suggest cd23 which means I missed bd completely. Based on this I'm reluctant to test because I have no reason to think it will be positive. My period should have been yesterday but has moved because I told glow it hadn't arrived. Symptoms wise, I have sore breasts and very mild cramping (so mild it could be gas or simply my imagination) but nothing else. Normally my temp drops 3-4 days before af. Thoughts anyone?