Girls, sometimes it still rips in the mornings... Today during vomitin…

Girls, sometimes it still rips in the mornings... Today during vomiting, it suddenly shot in the left back on the spine... and all day crawled, pain awful (spread out on two sides, but stronger on the left, in the lower back. Maybe this is kidneys? It happened a month ago too after vomiting, sharply jerked, but not as badly. I don't know what wall to climb and what to think, kidneys or so ligaments hurt from the fact that everything stretches