Pregnant?

Shannon
I took a test on Saturday as I was supposed to start on Tuesday and it was negative. Period didn't start Tuesday, and except for last month, I'm normally right on time or a day early. Today I took the test and this is the result... Hubby and I see a faint second line, is it a trick of our eyes? 
I'm thinking of taking another test tomorrow or Saturday to be sure before calling the doc, worth it?