Could I be pregnant?

Sabra

I don’t know if I could be pregnant or if it could be period symptoms or pregnancy symptoms. I had unprotected sex January 23rd and he didn’t pull out and we had sex twice that day. Im three days late on my period but today I started having dark spotting. My boobs are really tender and my moods are up and down. Im not having any cramping, which normally I get cramping around my period. I took a pregnancy test today but I think it came out negative. I swear I thought I seen a faint faint line when I put it up in the light. What do you ladies think?