I cheated on my boyfriend, with white guy! and im pregnant and 19 HELP!!!?

ok well im 19 years old and have been cheating on my B.F Tyrone for like a year now..and i feel really BAD!..and thats only because he cheated on me 3x last year. and so ive been cheating with a white guy..and my boyfriend doesnt really like this guy (seth). and i also had sex with seth not long ago so now im pregnant and its a positive. so now how am i gonna tell Tyrone?? cause im certain this news will kill him especially after how he tried to gain my trust back...and cheating on him with a white guy will probablly make him go nuts. so how do i tell him?? i feel bad..and this was all done in revenge...but ive always had something for seth he's extremely atttractive ( tall, surfer built, light green eyes, and curly dark hair). and since im 19 and still in college and living with my parents HOW DO I TELL THEM? you may say im 19 but trust me im still in there control. and my dads not a big fan of white people..so what do i do now! and dont be rude in your answer..like i said this was all done in revenge. was i wrong??