question: hi, just wanting to know what these symptoms may mean, they have just started over the last week or so..dry mouth/very thirsty, feeling of not being able to take a deep enough breath in & needing too yawn to get one in, especially after eating, also a feeling of when bretahing in like there is resistance..just had blood test, my fasting bsl was 4.5, everything else was fine except low ferritin of 13, but this is usual for me & have had low levels for at least the last 5 yrs. I am 36, also have mild asthma, but have taken inhalers for it thinking it may be asthma but doesn't seem to a difference..I am also am a RN so have been trying to rack my brain over it