no. it is normal. it is time for you to see a back specialist and get a diagnostic work-up perhaps including an mri. there can be many possible causes. back pain isn't just for older people.
i'm 18 with chronic lower back pains this can't be normal can it? . the pain is just getting worse. when i first started getting these fits of back pains (4 years ago) i got them maybe every other month. now i get these fits once or twice a month. the pain starts like this (for example) the other day i was sitting down and bending forward to pull a tupperware (that was stuck) out from under my bed. when i began to pull i immediately felt my back shift and felt a popping in my lower back. i feel immediate stabbing pain thereafter. sometimes my legs go numb.