What condition do my symptoms point to: lower back pain, burn when urinating(cloudy and rich yellow), vulvar discomfort and light yellow discharge ?

Seek medical care: Could be a combination of things. The back pain and pain with urination suggest a urinary tract infection that may or may not have started to migrate to the kidneys. The discharge suggests either yeast infection, bacterial vaginosis, or sexually transmitted infection. All depends on the specifics of your personal medical history. See a primary care provider for evaluation.