I'm not too sure. However, it doesn't seem like he's alive anymore. His entire body is completely inflated and what looks like some organs. My parent's suggest that we bury it before it "explodes like a timed bomb". Not too sure what's happening.
UPDATE:
He woke up today, and now he slowly regaining his energy. This is a big learning experience for me and my family. Thank you all for your suggestions?
Recently, temperatures have been around 10 celsius, and my turtle recently suddenly shrunk into its shell and stopped moving. It's been an entire day and a half and he just doesn't respond. I know that 10 celsius may have been too low for him, but I thought it was ok as this was his 9th winter...