Confused.

Elina
So I'm ttc my second baby I didn't experience implantation bleeding with my first. I actually had 3 normal periods my whole first trimester (talk about scary lol) anyways my last day of my last period was March 3rd today I felt something in my panties so I went to the bathroom and I'm experiencing dark brown spotting it's not a lot I've cleaned up and changed and haven't had anymore. Is this possibly implantation and when should I test? I'm confused because I'm supposed to be ovulating right now....  Is this even possible? the last time we had sex was the day before my period started which was February 25th when I wasn't at all ovulating. Suggestions? Anyone experience something similar?