What's going on?!

Jessica • Mon, Dec 08 • My hubby and I have been TTC since June 2012. I have a 4 year old from a previous relationship.

This past Criday, I started spotting brown after having sex with my husband. Saturday morning, I was spotting brown, with a little bit of pink. Sunday it was a light light red color. Today I'm spotting brown again. My period was due yesterday (Sunday). So, what's going on? Help!