Light brown bleeding after positive tests

Hello!

I noticed today I had some very light brown “bleeding” when I wiped. I ovulated on December 30, and have had 7 positive pregnancy tests today, yesterday, and the day before. All dark lines... One of the positive tests today was digital. Just looking for some insight of the discharge I saw... possible I tested too early and this is in fact implantation bleeding? Possible upcoming miscarriage/chemical pregnancy? AF due in 3-4 days but I typically spot 1-2 days before it comes. Possible I am stressing myself out?????? Thank you!