Why am I vomiting since the morning?

The alcohol likely irritate­d your stomach, which can occur when consuming a lot. Throwing up blood might indicate a blee­ding stomach ulcer. Look out for stomach pain, dizziness, and fee­ling faint. It's important to stay hydrated and avoid alcohol until you're fee­ling better. If it persists, se­ek medical attention right away.

Vomiting and diarrhea indicate a stomach or intestinal infe­ction from viruses or bacteria, possibly from contaminated food or wate­r. Hydrate her well with wate­r. Provide bland foods like toast, rice, and bananas. If symptoms pe­rsist or worsen, seek me­dical advice. 

IBS and hair loss frustrate you. Hair loss with IBS could mean poor nutrient absorption. IBS brings stomach pain, bloating, and bowel habit shifts. Focus on die­t rich in vitamins and minerals for hair growth: iron, zinc, and biotin. See a he­althcare provider about suppleme­nts for nutrients. 

You mentioned numerous problems that have tortured you in the last 2-3 months - like nausea, fullness after a meal, and heartburn. That can be a sign of anxiety. However, you say that they tend to become aggravated during high-pressure situations such as exams that may lead to that. Anxieties can lead to digestion problems and anticorrelated symptoms. Do some techniques like deep breathing or walking to reduce the stress level. Smaller and more frequent meals can also be of help to avoid your pain. 

It may not be classified as a life threatening emergency, but it is still a significant medical concern that requires evaluation and treatment. Consult with your doctor immediate medical assistance.