Suffering from bloating & cramps not on period what could cause such discomfort, also have irregular bowel movements go only 3rd day or 4th ?

Food sensitivity: Lactose or gluten in wheat can cause these symptoms, as can other allergens such as peanuts, soy, eggs, corn, or even coffee . Eliminating one at the time for several weeks may give answers if symptoms disappear. Probiotics may help balance intestinal flora. There are more serious conditions like colitis, or pancreatic problems that can be investigated if simple measures don't help.