Help/advice needed

Charlotte

I ovulated 3rd/4th inseminated same, today I’m like 12dpo I had mild cramps earlier then I had some bleeding mainly when I wipe at first bright pink/purple then went a darker colour, I’m cd26 and not due my period until Sunday I did a hcg test yesterday I felt like I saw a line but could be wishful thinking anyone any ideas? Could this be implantation bleeding? I NEVER come on my period early