Negative

Hii! This is a completely and totally negative right? I don’t see anything, I took the test because I am four days late but the only sex I had was anal so I don’t know, I was a little nervous but then again I was like how could it be possible??. I took an emergency pill last month and my period of that month came on the date it was supposed to, that pill could still be causing this delay on my af of this month??