Don’t know what’s going on

Alex

I got a very faint line on a test yesterday morning at about 12dpo on a first response. Later on I tried again and it was negative. I figured it was because it wasn’t with first morning urine. This morning I wake up with some pink or light red spotting. Is this normal?? Idk what to think. I know about implantation bleeding but I thought that was supposed to happen earlier on before getting a positive test. Anyone experienced this??