<human>: Some backstory - I'm a twenty-two year old female, about 5'7" and yes I am slightly overweight, but not to the point where my physical life is affected (I guess not until now). I'm pretty healthy and lead an active lifestyle. I have already been checked for kidney problems and am happy to report I have none.

My back problems started about two years ago; I started experiencing stiffness and soreness from sitting. It soon transitioned into sharp pains that, upon prolonged sitting, would shoot through my thighs. I began seeing a chiropractor who was very helpful and gradually, the pain subsided. 

Fast forward to March of this year. I work as a vet tech, so it involves a lot of heavy lifting and physical work. I'm sure it originally had to do with picking up a Great Dane or something, but somehow I managed to cause a small spasm that, at first, didn't bother me too much. The next morning, however, I bent down to feed my little dog, and when I stood, my lower back spasmed with a pain so terrible that I literally screamed. 

I couldn't walk straight, I couldn't sit, I couldn't hardly lie down without writhing in pain. At the E.R., the doctor gave me an injection of morphine and an anti-inflammatory. I went home and got two months of bed rest, and that was that. 

Today, I got out of the shower, bent down to pick up my towel and upon standing, was hit with the same pain, though less severe, from eight months ago. I had to immediately lie down and breath deeply to keep from crying. I'm relieved it's not as painful as it was before, but it's enough to have to call in to work... again. I'll be getting X-Rays done tomorrow morning, but I thought since I can't sleep, I'd ask Reddit about any diseases known to bring about pain like this. 

Any advice or thoughts would be very kind and I'd be forever grateful.

Can you provide a brief overview of the text?
<bot>: threw out back twice in a year, am only 22yo - is this normal or could this be a sign of some disease?