Allergic to Dust

Assalamualaikum

I'm allergic to dust. The thing is, my room is dusty and I have to clean it up before my brother's wedding next Saturday. Every night without fail, I'll sneeze until it feels like my nose is coming off, my eyes will go all puffy, watery & red, my face will get all itchy with redness here and there and runny nose all night (I look horrible during this allergic attack)

The doctors have diagnosed me with sinusitis & resdung. I used to take Nasacort (most expensive medicine 30ml=RM50) but my friend advised that it can only be taken maximum 2 weeks. So now I'm trying to minimize my exposure to dust. Otherwise a trip to the clinic will prompt the Dr. to sound me off "You know you are allergic to dust, why would you expose yourself to it?"

I can't help it, doctor, I need to clean the house!