hi, today after my two year old daughter woke up i found her mouth covered in dried blood also there was a big spot of blood on the sheet. I did not see her coughing, vommitting or spitting blood during the day. She seems generally alright with a mild cough at times. A day ago she had temperature, and heavy breathing, probably due to the temperature. At first i thought it could have been an ulcer in the mouth, but then i got anxious as what else it could be.