Hi I am Niki, I have unprotected sex with my boyfriend while on my period and this was on 5th or 6th of this month, my period stopped on the 6th or 7th and it is now the 14th , between then I've had cramps in my lower abdomen and then yesterday the 13th I started spotting brown and gradually my blood became thicker and darker kind of like my period over night, can it be a second period or implantation bleeding??!! I've tried searching my symptoms and all that pops up is "period or implantation bleeding" which does not answer my question, leaves me confused, I already have a 2yr old son so please help me