I've been having a lot of night cramps in my stomach my stomach is also very hard. and i have some cramps in the afternoons. i also have lower back pains. yet i get very tired and all i want to do is sleep when i get home from work. i did get my period in

Fibromyalgia? : 21 y fem has profound fatigue, perhaps depression, low back pain and abdominal discomforts compatible with irritable bowel syndrome. These are all signature symptoms of fibromyalgia. An exam & lab tests needed to rule out hormonal/metabolic disorders. If nothing specific found see Rheumatologist to be evaluated for Fibromyalgia.