I’m sorry you’re feeling this. Burning in the chest/throat and yellow vomit during fasting are warning signs. Please prioritize your health right now.

What to do immediately

• Stop the fast and do parna gently. This is not a sin in Jain Dharma when health is at risk; intention (bhava) matters more than the external tapas.
• Take small sips of warm water or oral rehydration (ORS). If available, coconut water is okay. Avoid sour/acidic drinks (like lemon) and spicy/oily foods right now.
• After fluids stay down, take something light and bland (like thin rice gruel/khichdi water). Rest.

Seek medical care today if

• Vomiting continues, is yellow/green, or you cannot keep fluids down
• There is severe chest or stomach pain, dizziness/fainting, very little urine, fever, or blood in vomit

These can indicate dehydration, gastritis, or other conditions that need a doctor’s care.

Jain perspective

• Ahimsa includes not harming your own body. Shastras allow ending a fast when the body signals harm.
• You can continue tapas in gentler forms while you recover: alpa-bhojan, ekasana, ras-parityag (e.g., avoid fried/sweets), maun, svādhyāy, pratikraman, and meditation.
• Resume stricter fasting only with proper guidance, especially if you have acidity, ulcers, diabetes, take medications, are elderly, or pregnant.

May you regain balance and continue your sadhana safely.