Taking a test. when to take one?

i want to take a pregnancy test to see if i am pregnant, but lately i have been going pee real early in the morning and then when i get up for the day, so when should i test when i get up at wee hours of the morning ? or should i when i get up for the day? just curious.
Update: if i took a test on monday.... how much longer should i wait to take another one? a few days? would a few days make a difference? just curious. anything would help.
Update 2: i am supposed to get my period sunday, i don't know if i can wait that long lol, i have been trying to be so patient, so far 2 1/2 weeks has gone by :) wee.
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