Greenleaves,
I'm sorry to hear you are so scared. Correct me if I'm wrong, but I thought I'd read somewhere that they found your lumps to be benign fibroadenomas. I may have missed some other developments on this story though, so you'll have to update us on the findings.
Here is some info that might ease your mind until you can get an appointment.
http://imaginis.com/breasthealth/benign.asp
Try not to worry. I know it's hard not to.