Location [Q] Blinking green LED phone off or appears to be

I need help fast guys. So I put my phone on the charger last night when it got down to 10% and when I woke up a green LED was pulsing and it wouldn't respond to the power button. I've held the power button down 10secs, tried power+volume down. Tried hitting it multiple times. Nothing. Screen stays off, funny thing is I never turned the phone off. So unless it rebooted it shouldn't be off. I searched a ton for this and didn't come across any info on a blinking or pulsing green light and screen will not turn on. Can anyone help??
MAKO RUNNING PA