I had a bronco spasm earlier today, can it cause my throat to be scratched and bleed a little?

Get an exam: I suggest that you go to a clinic or private physicians office of your choice as soon as possible to get a full exam. You should rule out possible serious and often treatable causes of the bleeding such as pneumonia, tuberculosis or even cancer. I wish you the best with your health and remain available to consult with you again if you desire.