When should I test?

Average period cycle is 29, shortest I've had was 25 and longest was 34. Iam on day 32 now and have the longest dpo at 15 days. My bbt is at the highest it's ever been throughout the cycle.

Update : I so apologize if this isnt allowed, just let me know and I'll delete, I got my bfp lastnight .. though this morning my temp dropped to right above the coverline (which is a huge drop) , so I'm scared. When should I retest???