The same germ that causes strep causes pink eye. I have had strep throat develop into pink eye several times. Since you just saw your doctor, and he probably prescribed you antibiotics, you should call the office and explain that you have pink eye. The doctor will probably just call in another prescription for you for the antibiotic eye drops. (mine has done this, but he knows I know what pink eye looks like)
They could be related. See an EyeMD. You may need antibiotic drops.
Dr. O.