Hi all. Had my ovulation on the 13th. Had unprotected sex with my husband on the 15th early the morning. Later that day i started having cramps. I usally get ovulation cramps. Then this morning the 16th i have a brown discharge and the cramps are worse. What could this be? This is the first time this ever happend to me after ovulation or having sex. We both went to the hospital the last 2 months so we did not have sex for that time. This was also the first unprotected sex for years as we are ready to have a baby now. Please help. Could it be inplantation, ovulation bleeding, early period (never happend to me before).