I went through an anxiety phase once, where I was afraid to talk on account of losing my breath. It was totally ridiculous, and was the culprit of a few terrifying panic attacks that were not necessary.

I do feel that I can relate, I sometimes feel that I must strain way too much just to speak. As if speaking is a chore. A very frustrating feeling indeed.

Thats what I mean. Like speaking becomes "work" and takes energy. Thats how I feel. Its weird.

Also had the feeling that if I talk I get panicky that my chest will cave in or my heart will stop. Ridiculous.

Mine was similar except it was for swallowing, and there would be times where I would panic and not be able to swallow for about half a minute - the effects are most likely psychosomatic and from anxiety. It's easy to say this, yet such effects caused by anxiety still happen...

Whenever I try to talk to anyone I don't know my mouth feels completly dry and I know that when I try to talk I won't be able to speak properly so everyone thinks i'm a weirdo.
It's frustrating because it's fine talking to friends and people I know well :(

Do you also get nausea sometimes, shaking in your chest area, fuzzy feeling in your head and a feeling that something bad is wrong like cancer or something`? I always think my heart is going to just stop.