Mirtazapine and tight chest or shortness of breath

hi all, last year in september i started mirtazapine and dispite the weight issue etc it really helped my anxiety and a little bit of my depression, one thing i loved about it was that it normalized my sexual life because i also take a ssri that are known for sexual side effects and mirtazapine kinda eliminate that side effect!
AFTER that i tried switching to trazodone because of the weight but its not the same thing, a couple months ago i tried going back to mirtazapine but this time is giving me a tight chest or like a short of breathness!!
IS this normal and pass with time or am i having a negative reaction this time around??

thank you all

Dear sir/madam,
Sorry to hear about your problem with mitazipane.
I would say it is probably something to do with this medication, but you need to see a doctor to check your heart rhythm and blood pressure etc.
Could be you have become intolerant to this drug.
I take quetiapine,currently trying to get down to 25mgs from75.easier said than done.!
Symtoms i get are shortness of breath,manic eating at night.(shortness of breath is occasionally)
Hope this helps,
Best wishes, Richard