So I had a light light pink discharge. Not a lot only noticed when I wiped and my period should be like in 2 weeks but I stared birth control 3 days before my period was supposed to start . Been on it for like a week and a half now. I always use condoms . Today I think my period came but I passed a larger than usual (for me) blood clot. Google suggested implementation bleeding but I took 2 pregnancy test and they were negative. Any idea what’s going on