Toddler sinus?

My LO has had treatment for sinus before. Over the past two weeks she started off having what I believed was a sinus issue as she just had a wet nose not running or stuffy but wetness inside nasals. She then developed conjunctivitis and was taken to the dr, he prescribed an ear drop and some allergy med for a week. She then had a fever, loss of appetite, and sneezing. That took a week to clear up, (I caught it but was put on antibiotics) she now is back to having a runny nose and her nostrils are red. I felt a slightly swollen lymph node in her neck and read that’s due to the body fighting infection. I don’t know if I should give her medicine for a cold or allergies or do I need to take her back to the dr again 😓