Infection Help!!

Long-lasting flu/viruses (childcare) I have been working in childcare for 2 years now and am still very susceptible to all sorts of things and am therefore always the loser💀 I have been suffering from a sinus infection for 5 weeks now and I am now on my 2nd course of antibiotics and I rinse with plenty of salt and I have an anti-inflammatory nasal spray. Now things are going a lot better, but I feel that this is not over yet. Complaints still: foul inflammatory odor in nose, pressure on forehead and slightly painful blowing. Anyone have experience with this, how did you get rid of it? and what are the next steps.