Doing Work Out. Having Shortness Of Breath, Dizziness And Warm Flush Sensations. Done With ECG. Left Side Of Heart Hurts. Worried?

Question: I was on a high intensity workout the past 2 months (Insanity), taking Spuritein Protein shakes (12g) with 1/2 yogurt, tbsp peanut butter, 4oz milk, along with chicken/tuna for lunch. Looking back my stools were less than normal, and difficult. I also would belch often and have the odd bloated 'full feeling' after meals.
Approx. 3 weeks ago I was unable to sleep due to shortness of breath, tight ribs/chest area, dizziness, warm flush sensations. I tried to walk it off and slept about 3 hrs (not all at once). Symptoms occured again the next morning and afternoon. I went to the ER . First ECG showed a U wave 'sinus'(?) the second normal. My Creatinine was 140 and eGFR 55. My urea was 8,6. I went back a day later with same symptoms of bloaty/short breath/chest. ECG normal, Creatinine 110 eGFR 65 and urea 7.2. I stopped taking the shakes and the workouts...symptoms not as bad but noticed certain foods brought on these anxiety like attacks, other times out of the blue. I am getting better sleep now but still can't fully fall asleep until 3am.
Sometimes my left side heart will hurt when taking deep breaths (spoadically).
Potassium/Cholesteral/Thyroid test - normal.
Awaiting results of my Cardio Stress test and Haltor Monitor. My family doctor is on indefinite medical leave so I can't get the results of all my other blood work + my appt for GI work and stomach ultrasound. I've also noticed I've become hypersensitive to high pitch noises and difficulty breathing/lightheaded in indoor water park/humid places.

A CT of the lungs showed no clot or lesions....What could it be?

As an aside question, my wife and i have been trying to conceive - results from sperm test 2 weeks ago showed 48% motility, 85% vitality, 8.4pH, 52% abnormal and only 5 million sperm count.

Thank you. I'm 38 yrs old 5'-6", 180lbs. I've been on a more strict diet with less heavy meats (steak) or late night eating. The symptoms are not as severe, less belching and better bowel movements. I'm taking digestive enzymes before meals, probiotic after.
Unsure why I get the short of breath/flush feeling in the early am, usually fine during the day and then again around midnight. (have supper 5:30-6pm). I've also noticed difficulty breathing in humid places and need my room at a cool temp to breath at night.(never had that before).

could the symptoms still be from electrolyte imbalance from workouts, not enough fluids? It's been 3 weeks however. Also, I'm still not getting 8 hours of sleep. 5-6 hours broken up.

Also, should I try a fatty food such as chicken wings to see if it brings on severe symptoms of tight ribcage, short breath, flush feeling, light headed to see if it is indeed gastro/hernia/gall bladder?

the first Xray I had did show a big gas bubble in my neck and sometimes tapping my chest to release gas helps breathing.

Can a hiatal hernia/stomach issue bring on shortness of breath, flush sensations?