I am already a mom, to keep it simply, I'm on the pill but have missed a couple days this month but then doubled up when I was supposed to. My boobs hurt and feel heavy, I have milky discharge, headaches and I was nausea last week where I felt like I had to puke but never puked. The thing is my boobs have only hurt when I found out I was pregnant with my daughter, I am supposed to get my period on October 2nd. Could I be? Or am I overthinking it.

Help!!!