Okay, I'm constantly hungry and thirsty, my breasts are sore, I always nees to urinate, my lower back is sore and I sometimes get lower abdomen pains.

Several things. Chris, this could be anything from diabetes (thirst and frequency of urine), to a bladder infection (lower back, abdomen, and urinary symtpoms), and throw in some puberty at your age (tender and growing breasts), to possibility of being pregnant if you are and have been sexually active. . You need to see your doc, or an urgent care to get your urine checked first of all, then follow up from there.