AFTER I LAY DOWN FOR A WHILE WHEN I GET UP THERE IS BLOOD IN MY SPIT BUT ONCE IAM UP MY SPIT IS CLEAR I NORMALLY SEE IT IN THE MORNING.
Hi, It seems that blood is coming from your teeth or ulcer in the mouth or congested nose due to infection.  You go for dental check up, ENT check up and x-ray chest to rule out some pathology in the lungs.