Normal or what? ?

So me and my SO had sex the day my period ended . (I’m on the pill, we used a condom and he didn’t cum while in me). The next day I started having this dark brown discharge, and I still have it. (It’s just spotting like I have to wear a panty liner) . My period is supposed to get here next week. Is this normal to be spotting brown discharge this long? I did miss 2 pills, but I’ve missed pills before and I don’t always spit like this? Just kinda freaking myself out, even tho I’m pretty sure this happened before but.. has this happened to anyone else before?