I think the 1 I got was a 3pk of Ist response or something like that & the first day there was unmistakenly 2 lines & the nbext day the first line was lighter than the test line & so I got another pkt & did 2 more & they are almost opposit that control line is darker than test line, but 2 lines = pregnant no matter whether it's darker or not! Stop stressing!!!!!! LOL...