I have a very painful lump left side breast. Was up more towards my armpit now it's down my whole left side of breast. I'm scared. It's painful. I do have large breasts so is it something to be so scared for?! I'm worried.

See your doctor. While this sounds like something that may be treated medically, you shoud not assume it is a simple issue. Please see your doctor as soon as you are able. I hope that your problem is easy to treat and cure.