25yrs old - sharp pain on the left side of my left breast. Hurts even if you put pressure on it or massage it.

Breast pain . It may be sore from an inflamed cyst. These can get painful depending on where you are in your cycle, or if you have a lot of caffeine in your diet. You can try taking Ibuprofen and make sure you have a properly fitted bra as well. If it isn't better by the next period, you should see your doctor about it.