What form of birth control is best? the shot or the pill?

Whatever works for u: Whether it is the pill or shot matters little as long as you take the pill regularly everyday and obtain your shots q 3 months as needed. both will work to prevent pregnancy.

Consider alternative: The IUD used to be limited to ladies with prior pregnancies, but is now commonly used in teens & others who were never pregnant. They are a bit pricey & initial placement is uncomfortable for a few days, but you can get 5 years of service with minimum effort on your part.