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[kat184]

I did a Clearblue digital test and it said I was pregnant and conceived 3 weeks ago. I did another test and it said I wasnt pregnant??? Im confused

[kimmery]

false negatives are very common, but false positives are not. i'd retest with first morning urine as k4d suggested.

[waldosbait]

you might want to check this website out gives alot of good info on it.  
http://www.*********.com/articles/falsepositive.html

[k4d]

The best time ov day 2 do a test it 1st mornin urine and if u have done another test l8r on in the day and drank a lot it can dilute the hcg in ur system wait until mornin and take another keep us posted plz x