Am i looking to hard at this pregnancy test?

af is due today. usually i have pms really bad and a serious headache and i havent had it yet. we are trying. i have a few other symptoms but thats not the question. when i tested for my first pregnancy the bfp showed up like instantly. that was when af was 1 day late. so i took a test today and the control line popped up and i think i seen a very very faint line in the test window. but i think im looking to hard and maybe seeing something that is not really there. im going to test again tomorrow morning. i was going to wait originally but i couldnt wait. so my questions is have you thought you seen a very faint line and it wasnt really a positive?