Blood in spit. Scan, should i go for it?

Its been 3 months I see the blood in spit saliva ( 4-5 spits ) once every alternate day . I have gone through all test ( chest ct scan , upper gi endoscopy. Stool test , nazal endoscopy , larynxscopy , 2d echo , tmt bleeding disorder )but all reports were quite normal ( mild gerd and gastritis ) . Need suggestions. I have shown to multiple doctors ( ent , gasentrologist , cardio , general, dental ) but unable to find the solution. Now ent has asked me to do the face ct scan, should I go for it ? Need help. Some doctors have suggested to ignore it, it will settle down on its own . Attaching my reports and medicines I have taken. Please help . I took some antibiotics and medicine to stop bleeding. It stopped for 20 days and it was back. Chest ct scan was normal. It gets over in few spits but not everytime like once a day ( alternate)