I am 6 weeks pp an had unprotected sex twice. both times he pulled out. i am breastfeeding and am now getting brown discharge. what is causing this?

Brown discharge: If you are breast feeding without supplementing with formula, it is unlikely but possible that you could ovulate while breastfeeding, causing the brown discharge. As you know, "pulling out" is not a reliable birth control measure, as some sperm are released before orgasm in a male. The brown discharge can also come from irritation of the post partum cervix with sex, as it is very delicate.