How many DPO did you get your BFP and symptoms?

So I’ve been feeling really off the last two days. Yesterday afternoon I got the worst back pain and could hardly move! Today has been ALL day nausea and tiredness and a horrible headache.

It’s too early to test I want to wait to get closer to my period.

Just curious what is the earliest you’ve gotten your BFP or started feeling symptoms which ended in pregnancy?