what do i do ?

kail

i know i see lines but are they just evap ? i took a test on thursday and it was the blue one , the one i took friday was a first response and i did it on my lunch at work , came back 10 minutes later later and it was very faint. wel then saturday i started my period and it stopped sunday night then i started spotting on tuesday morning. took a test yesterday and today and they were negative.. what do i do