hi im new to this  here i go ..... i took 3 home pregnancy test on Sunday (12.9) 1 FIRST RESPONSE and 2 Walgreen's brand all 3 had faint Positive line so i called my local Clinic and went in for a Pregnancy test came out Negative i came home and didn't understand so i took another FIRST RESPONSE and is a lot darker then the first one why do my home test come out Positive but the Clinic one came out Negative ill Post the Pictures .

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first test i took - Very Faint . http://www.flickr.com/photos/90927931@N07/8259920923/in/photostream

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blue second test is Barely noticeable in the Pic . 

http://www.flickr.com/photos/90927931@N07/8260988520/in/photostream

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After i got the Negative at the clinic i took this one .

http://www.flickr.com/photos/90927931@N07/8263502382/in/photostream 

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this has me confused is there a way for all 4 test be False Positives . i have another Appointment on Thursday just want your Opinion.Thank You :)

__ on the 2nd picture is missing the 2nd Walgreen's Brand test it wasn't to Noticeable on the Pic . 

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