Is getting a tan always unhealthy?

I attended tennis practice for 2 hours daily, 4 days per week for the first 2 weeks of june. I wore spf 30 sunscreen every day, even when it was cloudy but still got a light tan. I did not want a tan. I am naturally very pale and my family has a history of skin cancer. Am I going to age prematurely and die now? Or is it a good thing that my skin absorbed vitamins? Any ways to remove a tan?