What’s your opinion?

I am on nuvaring but I took it out a week late this month in accident and then my boyfriend and I had unprotected sex multiple times. We aren’t trying to prevent having a baby it is just whatever happens happens. So on Monday I got my period it was pretty normal, but since Monday night I have only been having spotting and white discharge and the blood was only bright red Monday which is also unusual when it comes to my body since then the spotting has been dark red, sometimes brown. I use a mensural cup so it is pretty easy to tell how much discharge and spotting I am having. Do you think I could be pregnant? Or do you know anyone who has had a similar experience?