Sayang, since you're pregnant at 20 weeks dan ada family members still positive, you really should check with your doctor or call your clinic ASAP, they'll give you the safest guidance for your situation and baby. That said, a few of us mum friends who went through this, try to isolate in a separate room if possible, use your own towel and utensils, dan if you share the toilet, sanitize before and after. Kena be extra careful sebab you're pregnant. The fact that you're already negative is good news, but confirm with your doctor how long you should stay separated from the positive family members, okay? Better safe than sorry when baby's involved.