MacBook Pro won't turn on and charger orange blinking light

Hi guys. I was doing my work and I just closed my MacBook (13' mid 2012) without turning it off or put it in sleep mode. Pretty sure my battery isn't drained out. When I got home, there's no blinking sleep light(unusual) and I couldn't turn it on. I connected the charger and there's only blinking orange light. Tried all the resets, read it up but nothing helps. And I'm worried now. Please help me guys. Lots of work and storage inside.