Honestly that sounds like the same sort of pains I get from my gallbladder attacks. I have gallstones and if I eat any thing high in cholesterol -pork, eggs, dairy; or high in fat, anything fried, red meats, oils; or anything alcoholic my gallbladder freaks out and sends pains that are unbearable. You really need to check with a dr about this because if you do have gallstones then sometimes they can get stuck and cause really bad problems like jaundice and infection.
Time to see the doctor. Could be gallstones or kidney stones.
sounds muscular. have you strained your muscle doing any vigorous activity and not rested it? i have chronic chest pain from a cracked sternum and it flares up all year