Chest Pain, Spit In Blood

I am an 32 year old Indian male and currently living in Ukraine. I have been eating food with reasonable amount of Indian spices like other million Indians eat.

Throughout my life, I have not tasted alcohol, never smoked, did not chew tobacco nor was exposed to any kind of drugs for pleasure.

I have a clean medical history other than having appendicitis at the age of 20, and never had any kind of pains after that.

12 months ago, I was infected with Jaundice (Hepatitis A). Last month, I had a mild liver pain for 2 days, and after that I started drinking some kind of herbal tea prepared particularly for liver healthiness, this tea is widely administered by the doctors here. Since I started having this tea, I never had any kind of liver pain after that.

While I started having this tea, I cut down on all food containing fats, meat and so on as recommended to keep the liver healthy.

For the last 2 weeks I am regularly eating Buckwheat as its protein has been found to bind cholesterol tightly. It is being studied for reducing plasma cholesterol in people with an excess of this compound.

2 days ago, I had some old buckwheat and I am sure it was too old to eat, but still was negligent while having it. 2 hours later, I vomited it completely, and I found blood stains in it. Since then I have a mild chest pain, and I find some blood in my spit.

Kindly advice me what do I need to do to diagnose my problem and what kind of treatment should I undergo?

Thanks in advance.

Gerry