A: Its going to have to come out somehow. get an abortion. if you don't, your fiance is obviously going to know, like what if the man you slept with was black and your fiance is white? no that would not be good. you fiance will be extremely mad. he will maybe forgive you though.
A: Its not a sin, its a totally normal thing for a teenage boy to do. it relieves stress and sexual tension. you may hear it's a sin, but its not. its healthy.