Trouble with first response digital?

Kellt
Im so annoyed this morning and slept awful cause my heart sank early in the morning! Ive had 3 positive pink dye cheap tests. This morning i used the first response digital pro, that way i could have a "yes" to show hubby. The test came back not pregnant ! I read somewhere to break the test open and actually read what the strip says and low and behold...two lines. Faint but definitely two lines.