Spotting in between periods

Hello!

I need help 😩😩. So I had sex with my husband Friday May 31st, my cycle started the next day June 1st which I knew would happen. I finished on June 5th. On June 13th I started spotting dark brown to light pink , this morning June 17th it started getting brighter red but going back and forth to dark brown . It hasn’t been enough to cover a pad. I also went to the OBGYN today and had a urine test that was a faint positive , so I did a blood test and get the results back tomorrow after 3 . As you can see I’m anxious and concerned . Can someone please tell me if they experienced this and if so what was the results ?