Hi, i am a 31 year old female, no children, and every month about a week before my menstrual cycle the glands or nodes in my arm pits swell. They get really big and tend to be rather painful. Same goes for my breasts, almost a whole cup size larger. When i was about 22 years old i had a cyst the size of an orange on one of my ovaries, and was put on some type of steroid treatment to shrink it. I have had these issues along with weight fluctuation. I have tried to lose weight, exercise and healthier eating but my weight drops one pound one week then gain three the following week. I am unsure if any of these are related, but please... tell me what in your opinion may be the issue and if i should be worried. thank you for your time.