Confused

Me and my boyfriend had sex a month ago with a condom that didn’t break or leak. I got my period but it feels a tad lighter than usual. It was the exact same as usual the first day with normal blood, the second day it wasn’t really there and now it’s the third day and I haven’t bleed much at all. My period are only 5 days long and I’ve been stressing a lot maybe that’s why. I’m just confused and scared that I may be pregnant. Note: it doesn’t seem abnormally light just slightly lighter.