Girls, hello everyone! I have symptoms of cystitis and they've sent me…

Girls, hello everyone! I have symptoms of cystitis and they've sent me for a pathology check-up. They say there's a risk, so I'm under observation to prevent premature water discharge. I wanted to ask, yesterday they gave me dexamethasone injection for early lung opening. Is it harmful to the baby? I'm really worried, I was very scared yesterday when they took me to an ambulance.