Should I be worried?

My boyfriend and I had sex in the middle of me ovulating without protection (please don’t say anything, I know it was stupid). eve clocks my period coming in in two days, however it’s been two or three days late the past few months. I went to the bathroom and I noticed brown discharge when I wiped and it also happened earlier today. I’ve had mild cramping but nothing bad. I googled it, which I definitely shouldn’t have done 😂 Should I be worried that I’m pregnant or could that be normal and it’s just never happened to me?