I think I broke my phone

Well, not broken as in "it doesn't work anymore." More like "it's doing something it shouldn't do, but it can still function."

Whenever I'm not charging it, which is most of the time, the phone goes on and off to charging mode around every 3-5 seconds, like if I was continuously plugging it and unplugging it. It bugs the hell out of me.

And normally, it wouldn't really be a huuuge problem (besides me being bugged by it), BUT whenever you plug in the phone, the screen turns on for a few seconds to let you know it's charging, and now whenever the phone goes into charging mode, which is quite often, the screen turns on, so the screen is on most of the time. I'm afraid I might do something I regret later without even knowing it while my phone is in my pocket.

I read online that it might be the microUSB port that needs cleaning, and I'm certainly hoping it is that. I would die a little inside if that part just stopped working properly out of the blue. Plus, I don't know if the battery is getting damaged or the phone itself...

Ich habe drei Geschwister: zwei Brüder und eine Schwester.
Ich habe kurze Haare.