Hey three weeks I went to the hospital for strep throat. My tonsils were very swollen and had white spots all over them. I have a history of strep so I knew what it was. The doctor gave me a precipitation for pennacilen and it read take ever six hours for 10 days. It has been three weeks and I'm still taking the pills due to there being so many pills. Now my lips have become very chapped and small black spots have formed. Should I go back to the hospital?