Cold/ nasal issues :(

B£öśšõms • Bfp after 1.8yrs of ttc n fertility treatments.. Baby coming October!!! Fx
I'm still waiting for AF to arrive (2weeks late + bfn) but have this rhinitis/ cold-nasal blockage without any other issues.. My doc prescribed me a light dose of antibiotics & it went away for 2-3 days only to come back again.. I don't want to repeat the meds again but it really gives me restless nights!! Any suggestions or homemade therapies that you have tried to get rid of something like this?? 
​Any suggestions will be great..thanks ?