8mm lump detected

Hello, I don’t know really where to start, I’m new to this site and am not sure what to do . Two weeks ago I had an itch on my left breast when I touched I felt a lump so the following day I went to see my GP who thought it was nothing to worry about but sent a rapid referral request for a mammogram. 
yesterday I had the appointment my left breast was fine however an 8mm lump was detected on my right breast. Due to this I had an ultrasound and a biopsy, my head was puzzled with it all . I had titanium placed in me , I just feel confused and I think if it is cancer how far gone is it , this wasn’t what I was expecting they said the lump could not be felt and everything was fine with the lymph nodes. Please can anyone give me any advice on what I’m going through, I don’t know who else to turn to xx