When testing what do you go by?

Lanet

Do you test by your dpo? Or days to period, I have a 28-29 day cycle, I always ovulate 12-13 of my cycle leaving me 16-17 days until my next period after ovulation. I’ve been pregnant twice before (both miscarried) but because I wasn’t trying I didn’t test early, I tested the day my period would have been coming because on that day I was all of a sudden hit with a million symptoms. I’m asking because easy at home has me as being able to test as early as Wednesday because it’s going by dpo,but first response said I can’t test until Saturday b/c it’s going by my period.