Breast lump

Hi about 4 weeks ago I noticed/felt a hard lump in my left breast . I plucked up the courage to go to the doctors last Tuesday. I am just wondering what the average wait time is for am appointment letter to the breast clinic. I have like a dull numbness in my breast and also have a quite dark vein next to the lump. Am quite worried as breast cancer does run in my family on my dads side am not sure if this will have the same affect as if it was on my mums side.