Girls, recently I had a runny nose, like my body was fighting somethin…

Girls, recently I had a runny nose, like my body was fighting something... I just coughed a little, there were some phlegm, not really much... My husband also had it before. Now my daughter has a temp of 37, she coughs once not too hard, but today already 3 times a day. The doctor said to drip aquamaris, and paracetamol for kids, either liquid or you can buy candles. What did you do? Tell me what's best? I'll tell you that we're breastfeeding, only sometimes give her water.