the symptoms occurring with lactose intolerance  include
Symptoms of lactose intolerance can be mild or severe, depending on how much lactase your body makes. Symptoms usually begin 30 minutes to 2 hours after eating or drinking milk or milk products. If you have lactose intolerance, your symptoms may include: 1  Bloating. 2  Pain or cramps in the lower belly.  Gurgling or rumbling sounds in the lower belly.