Should I log brown blood?

Sorry if this got asked before but I’m at a loss. A few days ago (like 5 or so) I was seeing a bit of brown blood in my underwear, lasted about 3 days but not enough to fill a pad. I didn’t log it, today is the 27th day of my cycle and I know periods don’t start exactly on the 28th and that there’s a range but I haven’t had any signs that my period is about to start, no aches, cramps or tender breasts. It’s freaking me out a bit and now I’m overthinking and wondering if the brown spotting was my period? Any help or reassurance is appreciated, thanks☹️

Also wanted to add that it’s been about 4 months since I started tracking my cycle so I don’t even know if it’s something to freak out over or if it’s always been like this and I just never paid attention😭 (I’m 20 and have had my period since 12)