Hard drive not mounting

My hard drive was working exceptionally fine until this afternoon. In the evening, I tried to unmount the drive from Linux Mint. It displayed a message " Do you want to clean the recycle bin of your Hard Drive? " Knowing it perfectly normal, I just told it YES. It successfully completed the tasks and unmounted the disk. And Alas! It suddenly went unusable. No device, let it be Windows, Linux or my Samsung TV, was able to detect it. The drive had a LED that was always on. But now the light blinks irregularly, as if it's struggling to mount itself. Though this is a bit off topic, please help me. I've my life in there. Please excuse my level of verbosity.