How do you calculate dpo? Is it the from the day of your peak or is it from the first day of that…

1DPO is generally the day after a positive ovulation test.

What if you don't do the tests

Day after ovulation is 1dpo. If you don’t temp or do OPKs then it is just a guess and won’t be accurate

I do do temp

I would be 17dpo then. When should I do a pregnancy test?

You could take a test now

Last week they were so faint that my phone wouldn't get a picture with it showing the line

If you are pregnant and they were true faint lines a test now will be able to show a stronger line

OK thank you

Dpo starts the day after ovulation day. It's considered 1dpo.