Light period for a three days then heavy?

Hey everyone! I was wondering if anyone experienced something similar to me. So about 3 days ago I “thought” my period was starting since I was getting the light pink brownish coloring. I wear the disk so I popped one in since usually after a few hours it turns pretty heavy. But what was weird was when I changed it out there was practically nothing there. Like I hadn’t even started at all or just minor spotting. I was already a little weirded out since it started four days later than I thought it would. I also figured maybe I’m stressed? But I’ve been more stressed out before and it not be that delayed. The next 3 days was still minor spotting and then last night I got the normal start I was expecting. Has anyone else had that? I’m pretty sure it’s normal, I have been traveling and hadn’t really had a minute to just nap for a little but I didn’t think it was that bad.