Im 15 years old and 24 weeks pregnant. My baby hasnt been moving or kicking or anything. please help. ?

I already asked this but I should have added this stuff on. My baby daddy and boyfriend was killed in a car wreak on Saturday night and since then my baby hasn't moved or kicked or anything. If he has died will he pass naturally or what will happen? My parents don't know. I need to tell them but the will kill me... they don't know because I have only gained 5 lbs my whole pregnancy. What do you think is wrong??