Dark spotting instead of my period

My period is always very normal. But, I ended up missing a few days of my birth control due to being sick. I didn’t think it was an issue because if I did that any other time I just doubled up and went on with my day. The day that I started doubling up my boyfriend and I had unprotected sex. Now, it’s the week of my period and I only have dark brown spotting unlike my usual period which is always heavy. Of course, I went on a Google rampage to make sure I didn’t have to worry. But, it didn’t help. Just need any type of advice. Thank you in advance!