Hi Welcome in H.C.M. I understand your problem and as you said that your nose started re bleeding even after cauterization which stopped by pinching the nostrils. Here I would like to attract your attention towards factors responsible for nose bleed like- 1- Hypertension. 2- Thrombocytopenia ( low platelet count in blood ). 3- Severe anemia. 4- Aquared bleeding disorder. 5- Local nasal disease like growth or polyp etc. Considering all above in mind you should consult your ENT doctor for thorough examination and necessary investigations to plan for treatment. You are interested to know the effect of blowing in and out of nose on nasal bleeding. In this reference I would like to tell you that both blowing in and out are precipitating nasal bleeding as- Blowing out nose will cause increase in intra thoracic pressure and thus nasal veins gets engorge. Similarly blowing in will lead to removal of nasal crust from bleeding site and re bleeding will take place. Thanks for consulting H.C.M.