<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi, i have had some dull chest pain on my left side. I become aware of the pain when a carry one of my children, i have a 3 year old an 7month old twins. I feel the dull pain on the left side of my chestbreast area. It feels to be under the breast area. No lumps . Could this be something serious? such as breast cancer . I have had an ultrasound performed on my left breast and, thankfully nothing was found however the dull pain remains. Would a mammogram rule out any possibility of cancer?  <response>: Hello dearmastalgia breast pain without lump is unlikely related to cancer. Hence need not worry. Mastalgia are of two type 1CYCLICAL: starts one or two days prior to menstruation and relieves on onset of menstruation 2NON-CYCLICAL: is not related to menstrual cycle. Cyclical needs only counselling, evening primrose 3gmday in divided doses, avoid coffee and chocolate intake. Noncyclical needs only painkiller. Hence classify your pain into cyclical and noncyclical. And take decision. Hope this is helpful to you. 