From the past 4 days i am having difficulty in breathing, it started at one evening 3 days back and since then its continuous, when i breathe in with my mouth by getting air in fully then there is some relief from the pain for few seconds and again it starts but when i sleep it all gets okay no problem then but after i wake up it starts again, now i am getting light headness and my hand arr vibrating just like they do when blood flow is hindered in hands, i have one blocked nose, there seems some tightness and some pain in chest area as well, i am worried that it might be something big please tell what it is! Abd yes I've got no fever or chills or loss of sense if taste and smell!