I can understand your problem, Thank you for post on HCM.
I have reviewed your history as you are having blockage of left nostrils.
Your history suggest me that you are having a seasonal flu
for which i think you taking treatment.
I my clinic for my patients with this symptoms i would have advised.
1. Steam inhalation with Synerest
2. Oral Antihistaminics.
3. Decongestant Nasal drops
4. Oral Antibiotics
You will be alright if you follow this advise.Any query you can discuss with me.