Stomach bug a week ago heaved bad to were i brought up blood next day swollowing painful fast forward to now 6 days later have a dry tickling cough bringing up clear sputum small almost hair like streaks of red blood should i worry or just monitor?

If what you described are accurate you have 2 different symptoms, hematemesis (vomit blood) and hemoptysis (cough up blood). The first symptom is not uncommon which can happen when you are retching too much; however, it is not related to the second symptom unless you have aspirating pneumonia with heavy vomiting in supine position. If fever or dyspnea or chest pain occurs you need to see a doctor.

These are potentially serious symptoms and may represent a bleeding disorder, underlying GI and/or lung disease. If the sputum has scant blood, often this may represent irritation/infection of the upper airway, including nasal passages. Please see your physician for further evaluation. Watch for recurrence, fever, abdominal or chest pain.