Just remember, it only takes that ONE time to screw you up for life. I worked over 2 years without a problem lifting and carrying more than I should. I was 22 and indestructible.
One time (I had done it many times) I was carrying 2 4x12 5/8 drywall from my truck to a house through a muddy unfinished driveway and it was a little windy. Wind caught it, twisted and my back when POP. Game over even though I worked another 2 weeks without missing a day even though I would collapse 3x a day due to my back pinching and legs folding. When my boss saw me fall he made me take time off. I healed 80% in the next 2 weeks??? OK it didnt hurt as much but??? From there on out over 20 years it was down hill until I could not walk or stand for more than 5 min at a time.
Protect your back at all cost. We didnt wear lifting belts back then either
Just because it has NOT happened doesn not mean it cant or wont so start being even more careful now and dont lift that by yourself.....