I am 16 and my bf is 19 and totes got locked up now i fink i am preggerrz wif his seed. heeeelllppp?

Mkay so like i have been wif my bf for 3 months (feels like 4eva) and last nite he got dun for drink drivin and mi bff sez that means he will go to jail as its hiz 3rd time. totes worried about being preggerz as i havent got mi period and feel sik all the time. freaking outtttt!!!!!