Update, maybe pregnant

If I started my combination pills on the 4th of this month and possibly ovulated on the 10th also had intercourse in the 8th and 10th, but continued taking my pills. Could I get pregnant and would my pills mess with the pregnancy?

So today I started to have a good bit of CM..had to change panty liners twice. Also there was really light blood, pretty much pink when I wiped and mixed in with the discharge. That was today and I haven’t seen it since I got home at 5. Was this implantation? Would a baby have been able to implant if I kept taking my BC pills?

I also took at test today, 6dpo, negative. & I don’t have any of my symptoms I’ve had all week..they all just stopped.