I had 3 canker sores on different occasions in my mouth,and I fell forward on the street today,unfortunatelly,the blood(on the ground,still fresh,I saw 2 guys standing beside me,maybe it`s one of them who left the blood on the ground) contact with my lips!!!and one of the canker sores is on my lips!!!!!
If the blood contact with my canker sore,am I risky?The blood was still fresh!!!!!
I`m soooooo woried,please help me!!!Should I get a test?