Why do I have nausea, vomiting, and heaviness in the stomach just after eating?

Hi doctor,

When I wake up early in the morning around 7 o'clock, I feel very nauseous and vomit a lot. When I smell something bad on an empty stomach, I vomit a lot. When I eat hard food such as beans, peas, and meat, my stomach becomes heavy and sometimes it hurts, but sometimes I am fine with the same food. When I eat too much bitter, spicy food or things cooked in oil, I feel my stomach becomes upset, but sometimes I feel better. Sometimes it does not get worse. I feel more uncomfortable when smoking cigarettes and marijuana, and sometimes I also vomit. When I wake up in the morning my mouth tastes bitter.

Note: I have done a lot of treatment and I have taken a lot of medicine, but the treatment did not help me. The doctors tell me that I have H pylori in the stomach. Clarithromycin 500 mg, Amoxicillin 1000 mg, Metronidazole 400 mg, Omeprazole 40 mg, and Antiacids are used for my treatment.

I want you to help me.

What is my real disease?

What medicine should I take?

What food to eat and what food not to eat?

Thank you.