Missed Period or nah?

Hey guys! So I was pretty bad at taking my birth control last month, there were times I’d forget multiple days in a row. So when I bled a little, I wasn’t ready for my period so I just finished off the pack and then nothing happened. I decided to let my body do its thing without hormones this month and didn’t take my pills. I think my period should be any day now, but hasn’t shown up. On Saturday I had some brownish discharge, but it didn’t even last through the night. Could this just be because I’ve been messing with my hormones or should I be more concerned? (I have had sex, but I used a condom).