Hi yall! I wanted to ask because I guess bleeding while pregnant is a normal thing. Is implantation bleeding only light pink? Or can it also be brown with brown clots?

I haven’t had a normal period since May, I was on birth control. Then I had intercourse and had to double up on a pill I missed and I took plan b just in case. I spotted for 6-7 days in June, it started 5 days before my period was supposed to start, it was just brown blood, and brown clots with mixture of discharge. I tested for pregnancy with urine tests and blood tests. They all came out negative. This month, I only spotted for three days, it was light pink and one brown clot only. I feel like I am pregnant but it’s not showing up on pee or blood tests. Because I have symptoms of peeing constantly every 30 mins, headaches, acne on forehead, nausea. However, I’ve taken digital clear blue, clear blue, first response digital, dollar tree tests. All negative, no faint lines.

Is it possible to bleed brown and clots during implantation? And also be asymptomatic? I would be 9 weeks and 3 days if I am pregnant. The last pregnancy test I took was yesterday.