Bfn and close to 14 dpo

So we have been trying for six months now. I know that’s not a long time in the scheme of things but it sure feels like it. So I’m close to 14 dpo I believe. Hard to say because I missed a crucial day of data. My temp went up again today. I’m about 2-3 days late but I know that’s not anything. The first time I got pregnant I got a vvvfl at 14dpo. So my question is for those that were pregnant but hpt wouldn’t register it until later than most people, how late was that? Were you like 16 dpo or what? Please help. Trying to figure out what’s going on.