I used 1st response with both my PG's and with DD1 there was a FAINT line the first time to the point we thought nothing was there, 3 days later 2 bright pink lines... hmm

DD2 is due in Jan and this time the 2 lines were up pretty much within 30sec.

blessedatlast is right through, You have more of a chance of a false negative than a false positive

I would book in to the Dr's and get everything confirmed 100% but sounds to me like your PG.. congrats if you are... GL!