Power button light keeps turning off and on after some time

I have been experiencing it for quite a while a now (2 weeks maybe). I have an Inspiron 15 5000 series, bought it back in July 2018. An year ago I replaced it's CD-ROM with a SSD, I don't think it's gonna give me any trouble all of sudden after a year.

The thing is laptop is working perfectly, all good but it's power button light turns off and then on after a couple of seconds and it keeps on happening after every 10-15 minutes, no matter if the laptop is charging or not it keeps on happening. 

Is it something I need to be worried about?