HI I am 45 year old female. I have had chest pains on and off for many months. Last July I went to the GP as I had pins and needles in my left hand which last about 5 minutes and pain down that arm. ECG was normal. Thought probably muscular. Have low blood pressure but was alot lower than normal for me cant remember figures sorry. Have been a bit more dizzy and light headed on occasions though so thought it was lower. Had one incident in following months when chest pain bad enough had to sit down and felt quite rough for about 15 minutes. But ususally just an off and on pain. Can be a little breathless at times and chest feels like someone sat on it sometimes. Also occasionally heartbeat goes erractic. Went back to GP in January after another day of bad chest pain but felt a lump about an inch across in the tissue behind the breast towards upper middle. Mammogram and ultrasound clear. Thought maybe mastitis. Chest pain eased last month. Lump still there. Other points to mention. Mum died of SAH. Daughter diagnosed with two non incidental heart murmurs. Also dont respond to morphine as a pain killer discovered after D and C and deteched retina surgery. May or may not be linked.