So I finished my period November 16, Monday. On thanksgiving I started bleeding, it wasn't painful but it was brownish red & it smelled of regular blood not period blood. I just stopped bleeding yesterday, however it wasn't spotting...it was a decent amount as if I had a light period & I was never in pain. My period is never irregular however i was sexually active on the 19th, 20th and 24th...what could be the purpose of my bleeding?