I'm scared and wondering what to expect

I found a rigid vein in my left arm pit and a lump in the left breast about a month ago.  I just saw my ob/gyn on Friday and she confirmed that the left breast was slightly larger and that there was more fibrous tissue there.  They also did a CBC and ordered a mammogram and ultrasound for Thursday Sept. 4th.  

The nurse just called and said that the CBC was normal, so does that automatically rule out cancer?  What should I expect when I go in for the tests on Thursday?

Thanks in advance for any and all replies.,

Jennifer

[Dennis MD]

Hi Jennifer.
How are you doing?
A normal CBC would not rule out the presence of cancer.  Breast cancer is diagnosed through biopsy, supported by clinical evaluation and diagnostic examinations like mammogram and breast ultrasound.
I agree with your decision to seek consult with your doctor.  Hopefully the result of your examinations would point to a benign pathology.
Regards