Help.

I gave birth on August 30,2016. My son slept fine on his first night home but the next couple of days he does not sleep I do not hold him anymore unless he needs to burped. I know it's wrong to place them on your bed surrounded by so much pillows but he goes to sleep so fast and when I put him in the bassinet he doesn't sleep unless it is on his stomach. I do not not want him getting SIDS but that's the only way he'll sleep unless he is on the bed he sleeps on his back. Someone please help me I'm a FTM and only 20 this is all new to me.