Hello
Im fairly new to this but just wanted to say it sounds to me like a positive test!
a few mths ago the same thing happened to me with one dark line and one very faint line - i wanted a few days and both lines were fairly dark! and i was pregnant (i did the test with the "first response")
Unfortunally i just recently had a miscarriage at 8.5wks - now dont know what to do or when to start trying again!
Good luck with it! let us know how the next test goes!