I have just recently started experiencing this SOB. I also have a nasel drip and had an operation 3 years ago to correct my deviated septum. I seen an ENT last year as the drip still bothers me and I spend a lot of time clearing my throat and smoking southern. About 2 weeks ago I stared experiencing SOB which resulted ina panicattacka few days ago and I went to hospital. Lung scan and heart tests all normal, bloods normal. I do have a failystressful just and moved home a couple months ago, but I can honestly say, I'm happy with both and do not feel depressed,I have been saying a councillor in work but this is standard practice as I work in mental health.
I suffered sever depression and anxiety 10 years ago and I honestly do not feel unhappy in fact it's the most settled I've felt I along long time.
I am going to start the breathing technique today and I'm planning to see a natural path as my doctor gave me a brown paper bag and some temarzepam and told me your anxious get some rest and I'll book you a councillor Nnext week. Tbh this made me cry more and I feel like people think I am making this up and lying.
I can't help but feel like it is allin my head now due to the reactions of others.

Will update!