Ive been having this lower back pain for 2 months almost, i've also gone for a medical at work and apparently i have a kidney infection, could those two be related?

Yes: Mid to lower back pain can be caused by pyelonephritis (kidney infection) & bladder infections.

Low back pain: In my experience low back pain is rarely caused by a urinary tract infection. An infected kidney is a serious problem usually accompanied by chills,fever, flank discomfort. Bladder infections cause burning on urination and not low back pain as a rule. If your urinalysis with microscopic examination,urine culture and colony count show a UTI, get appropriate treatment. See orthopedic as needed.