I am 29 female. I have a cyst in my underarm. It has been there for 9 years. I have had it looked at every time I went to the doc and he said it is not bothering you so no need to do anything. A year ago I had a mammogram to look at it just because I wanted it. It came back fine so doc didn't want to see me again about it. I went to a dermatology about something different and had him look at it because I was having shooting pain in it and I was feeling it. Also my chest was hurting sometimes. I thought maybe related. Anyways he immediately said with my age and how long it has been there he wanted it biopsied. He sent me to a general surgeon. She sent me for a mammogram and ultrasound. It has came back negative. Said the breast parenchyma is dense. I have been having trouble with some other problems. Like loose weight since June 134-113 lbs. I have been exhausted and stomach hurting. Making me not eat as much. Also I was on doxycycline since January. Not taking it anymore. Now I am having diarrhea once a week with constipation 3-4 days in between. No fun. I have a new family doc now since last one never wanted to do anything. The new doc is sending me to a gi doc and wants met o have the cyst looked at further. I asked her if she thought it was a gi or digestive prob from the antibiotics. She said I hope so. So I guess I'll find out. Does this sound like anything anyone has experience before cancer diagnosis? I know you don't know if i have cancer but thought you might know if it is classic symptoms of some kind of cancer. I was not worried about the cyst because it has been there so long with no changes that I can tell. Just the doc said to have it checked out more. So I was thinking she was thinking it could be something. All blood test came back fine.