Aiyooo, ini serious lah! Secondhand smoke during pregnancy boleh affect baby, jadi kena handle this ASAP. Pelease pergi jumpa your gynae or midwife first to discuss, they can guide you on next steps and document everything, okay? In the meantime, a few of us mums have dealt with neighbour issues like this, close your windows, use air purifier kalau boleh, and try to talk to your neighbour politely first. Some areas ada rules against this, so you might perlu check with your condo management or local health department if the talk doesn't work. Your baby's health comes first, mama! Hang in there and get professional advice sebab this one kena take seriously.