[wanja123]

For a few weeks now I have been struggling to breath when trying to sleep. It feels like my throat and chest are closing up. I also have severe stomach pain and get tired and out of breath easily. My legs also get shaky when I walk.

Does anybody know perhaps what the cause of this can be?

[Fr_Chuck]

A stomach ulcer would not be any of those, and without very complete medical tests no one will know, so schedule an appointment with your doctor.