New mom

HisBabyGirl17

So on Friday, I found out that I was pregnant... 

When I told the babies father... he was happy at first.. but When I asked him to stop smoking pot and drinking, he told me that he wouldn't.

I do not like that around me... or do not want it around my baby.

he lives with his father...

He has no job... Or no income...

I have no idea what to do...

I am 19... I turn 20 in December...

My baby is due around December 13th...

in my head I want to get far away from the baby's father.. but I do not want to take his baby away from him...

I do not know what to do  

Advise?