My 6 months baby are having blood in mouth 2 times...

What are the causes of blood out of your baby's mouth?
Deficiency of certain vitamins such as vitamin B and C and vitamin K.
Decreased coagulation factors
Platelet deficiency
Mouth and tongue wounds
Gingivitis
What is the treatment for blood coming out of your baby's mouth?
First , the child's gums and teeth must be checked and he has no cough or inflammation in the tonsils. If there are any problems, he should take augmentin three times daily for 5 days in the absence of an allergy to penicillin and flagyl three times per day for a week .
in Iron and vitamins deficiency I recommend giving him multi-vitamins such as kiddi pharmaton. Also, in the case of platelet deficiency and clotting factors, the deficiency should be compensated and the pediatric hematologist should be consulted. Finally, I recommend drinking warm drinks such as chamomile, anise, hot soup.
What tests are needed?
Clinical examination, blood test, vitamins test, platelet test, clotting factors 
What is the advice in the case of your son?
I recommend visiting the pediatrician to perform the necessary exams