Inside of nostril red and itchy for 2 weeks

Age 32

Sex Male

Height 181cm

Weight 67kg

Race Caucasian

Duration of complaint 2 weeks

Location Europe

Any existing relevant medical issues N/A Current medications N/A Include a photo if relevant

https://i.redd.it/mblja1aj22bh1.jpeg

2 weeks ago left nostril got red and itchy in the deeper section, and then the outside skin of my nose got red and puffy like Rudolf and I was put on a 5 day course of flucloxacillin. Then it started getting worse again so put on another 5 days of flucloxacillin. Now the second course is complete, the outside of my nose is a little red but mostly calmed down, but inside of my left nostril is still bright red, a little puffy and itchy. Is there anything OTC I can buy as won't be able to see Dr for a while? It's been around 15 days since it started without change. Thank you.