Breakthrough bleeding after years?

So I’ve been taking various birth controls for a long time but I’ve been taking Enskyce specifically for about 3 years. About three or four months ago I started having the most minuscule amount of breakthrough bleeding about 5-7 days after the start of a new pack. It’s light brownish in color and like literally a few drops over two or three days with some light cramping occasionally. Then it goes away until next month. I’m pretty consistent with taking my pills at the same time each day.I don’t skip my placebo week.

Has anyone experienced anything like this? I’m starting to get concerned and will probably get checked out to be safe but I’m curious if other people have ever had something similar happen and how it was resolved?