Hi Dear , Welcome to HCM, Understanding your concern .As per your query you have severe nausea and nose bleeding . Well there can be many reasons for headache and dizziness like low blood glucose or iron level , infection , meniere s disease , sinusitis , neurological , inner ear infection and due to certain medicines such as blood pressure medicines or anti depressants . The symptoms like nose bleeding can also occur due to nasal polyp in nostrils ,which can be examine with nasal endoscopy. I would suggest you to consult ENT specialist for proper examination and rule out above causes . Doctor may order balancing test , rotatory chain test , hearing test , posturography and CT scan . Doctor may prescribe anti emetic drug , sedatives . For now avoid bending forward and take ibuprofen or acetaminophen for headache . Doctor may also refer you to cardiologist in case of cardiac problem . Also apply ice and pressure to nose while bleeding , squeeze nose for a minute while bleeding . Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari