Hi My Name Is Tim I Feel Like I Can't

Hi my name is Tim I feel like I can't breath an I do have anxiety but when I don't feel like I'm having it I still feel like I can't I have a hard time I can breath better when the fan is on an ear conditioner also I smoke cigarettes I know that don't help when it hot or warm out an I feel like I can't breath when that happens I feel like my voice goes low my ear plug up an my muscles in my neck tighten up is this any signs of Asia also ill get light head but then I'm fine sometimes