So stressed. ?

I'm 20 weeks pregnant. Found out that my partner is using drugs lately. Sya lng yung meron ako ngayon, pero sobrang epekto sakin nung malaman ko. Parang gusto kong magisang buhayin nlng si baby. Without the help of anyone. Kahit na sa partner ko because I really don't tolerate that kind of thing. Ano po ba dapat kong gawin? Naaapektohan na yung health ko simula nung malaman ko. ????