My bf and i had sexual activity on march 8 afternoon, i got my regular period last march 15, does that mean im not pregnant? we didnt literally sex, he just fingered me over my pants not inside body and i think he had a semi dry semen on his fingers.

No: Pregnancy is not possible in these circumstances. Always use contraception if conceiving is not desired.

Agree with Dr. P: You are not pregnant. Have a healthy diet, exercise 30 minutes/day, drink plenty of water, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/. Get HPV vaccine. Wish you good health!