Feeling dizy shortness of breath. To do.

Hi Feeling dizzy entire day and couldn't even stand up for 5 min at a stretch. Feels like shortness of breath if I had to wake up resting position to move inside home. Stopped driving or going out because of that. Food intake has reduced a lot since a week and stomach hurts with a twisted pain right hand side if I forcibly swallow food. Not taking any spicy food to avoid excess discomfort. I also have gone through Angioplasty twice and under medication for the same. Trachea hurts while swallowing on right hand side or talking. Got treated for abdominal infection with excessive vomitings and loose stools couple of months back. Feels like having stomach issues. Night sleep also has reduced due to discomfort and burbs which at times hurt while having. Please suggest. Sorry for long summary, but I am confused as to whom to consult and what to do. Thanks.