23 years old very scared, pea sized lump in left breast

Great news........keep a record of your results...they will put a mark on your future mammograms to show where your biopsy was...I had my first lump at about your age and had ten more...it never seemed to get any less nerve wracking. Glad you got good news. Keep up with your BSE's and mammograms...and relaxing, and living life...it seemed like a huge shadow hanging over me cause of my family history...one day at a time...best of luck and life to you