I am wondering if I should take a pregnancy test because 3 days before my period was scheduled to start, I started having brown/ dark red spotting for 3-4 days and then it stopped and my period never started. I recently switched pills last month, and last month I didn't even have a period, but my doctor said that was normal. My boyfriend and I had sex 4 days before the sporting started, we used a condom and I was taking my pills. but I read online that that's the timeline for implantation bleeding, that's why I'm worried. I don't want to over react so I guess I'm not sure if my worrying is justified or if I should let it go?