Should I test?

Hi everyone! I'm 32, TTC 8 months, and last month was my first "normal" cycle since getting off BC for the last 16 years! I average 24-25 day cycles since then, 13 DPO ( took first opk since Month 1 of TTC back in August), and it's CD26. In order to avoid yet another disappointing BFN, when do you think I should test? According to Ovia, I was due yesterday. I am sure all my symptoms could be PG or AF....ugh so frustrating! Any advice? Thanks!