AceShowbiz - Rock veteran Ozzy Osbourne was convinced he was suffering from a "terminal illness" while recovering from a recent fall because he was in constant agony.
The Black Sabbath star has been sidelined since the beginning of the year, when he took a serious tumble at his Los Angeles home, which dislodged metal rods fitted in his spine to correct an injury from a 2003 all-terrain vehicle accident.
Ozzy had to undergo surgery and was forced to postpone all of his 2019 tour dates as a result, and he has been laying low ever since.
Now the musician, who recently pushed back his rescheduled European shows to allow him further time to recuperate, has opened up about the horrific slip, which he feared would cost him his life - or at least his mobility.
"I went to the bathroom in the night, lost my balance and landed flat on my face," he recalled to the Daily Mail. "I saw this big white flash when I hit the floor and I thought, 'You've finally done it now'".
"I knew it was bad, I thought I was paralysed, so very calmly, I said, 'Sharon Osbourne (his manager wife), I can't move. I think I've done my neck (sic). Phone an ambulance'".
Ozzy is still working his way back to full health but admits the pain is "constant" - and it initially made him believe his wife wasn't being completely honest with him about his medical diagnosis.
"The first six months I was in agony," he continued. "I'd say, 'Sharon - you're not telling me the truth. I'm dying, aren't I?' I thought I'd got some terminal illness because the improvement was so slow".
"I'm getting better," he shared, "but after the surgery the nurses asked me on a scale of one to ten how much pain I was in, and I said, '55!' Six months of waking up in the morning and being unable to move is a miserable existence".
The singer ended up using his time on bed rest to work on new material, which is expected to be released in early 2020.
Ozzy is due to resume his No More Tours 2 Tour in May.