POSSIBILITY?!??

Taylor

Hi, so about a week before my period was supposed to start me and my bf had sex and I had a pinkish discharge that looked like slight blood but that was it none the rest of the day.. well, my period is now 4 days late, I have been nauseous, craving popsicles, and extremely tired. I took a test yesterday but I think I held it in the pee too long, and I might have messed it up but there is a horizontally diagonal line in the test window... WTF does that mean???? Should I just wait another day and see if it comes or take another test?