Hello,
You are suffering from gastric disorder that causes to gastric pressure on diaphragm resulting in pressure on the heart ,dropping puls.
Tk, plenty of water to hydrate your body to prevent constipation, diluting acid in stomach. Go for meditation to reduce your stress to nourish your body including digestive system to check gastric disorder.
Your diet be simple, easily digestible on time to check gastric disorder. Tk, apples, carrots, Papaya, tonned mill. Tk, homoeopathic medicine:@ Arjuna Q -10 drops, thrice with little water. @ China 200-6 pills thrice.
Avoid, junk food, alcohol & nicotine Tk, care.