Triphasic chart? When should I test?

R

So I’m absolutely no expert in bbt or charting, but FF said that I had a potential triphasic pattern on CD 27 (I’m now CD 30). What do y’all think? Or think in general about my chart, does it look promising? If it is looking decent, when do y’all think I should test? I’m 13 DPO as of today and when I tested this morning (pretty early, around 6:30 am) I got a BFN. I was thinking tomorrow or next day, or should I wait longer?

Thanks in advance for any help/info!