When is the earliest u get a positive pregnancy test? after you missed your period?

My periods were irregular so I tested 3 weeks after missed period.

i tried one week after i missed me period. I had clear lines

the day i expected my 1st period it tested positive already

5 days after a miss period to be sure

around 5 weeks, had a clear line too

1st day of missed period

about a week after missing period

5 days after i missed my period

3-4 weeks after missing period

10 days post conception