I gargle with warm salt water and take Sudafed for the congestion (sinus/ears) or Benadryl if I get itchy, sneeze, eyes tear. Saline spray/gel, A humidifier and air filter helps at night. Keep hydrated, Chamomile tea with lemon,

If my ear pain does not ease up a half hour after taking Sudafed I will take Tylenol 8hr extended release but no more then that.
I use menthol rub (a tiny amount) and rub on upper chest (by collar bone).
I don't keep any plants indoors. There are mite proof mattress covers out there and they are costly. Frequent linen changes and keeping dust in check will help. Feel better. G