Your Ultrasound report states that you have a lump in your left breast,that looks suspicious.
A BI-RADS category 4 was added on your report,meaning that the lump has to be biopsied to determine it's nature.
Nothing was found in your right breast and it looks normal.
Also your lymph nodes in your armpits,are normal and show no sign of disease.
Keep in mind that many biopsies done on suspicious lumps return a benign (no cancer) finding.
When radiologists categorize the BI-RADS score "4A" it also means that the lump is less suspicious than "4B" or "4C".
You should call your doctor to have the Ultrasound report explained to you in detail.The more you understand what's going on,the better you'll face everything
Keep optimistic and don't worry too much before you have to.Things might turn up to be just fine.
Wishing you all the best...