Don't worry about that. I am not sexually active and i have suffered canker sores since i can remember. My doctor treats my canker sores like if they were a form of Herpes Simplex. Some things on the net are false. But if worried contact a doctor. But there shouldn't be any worries. Only worries on the pain.
thanks.
But I've this canker sores and I'm worried because I've read in the net that are sympthoms of autoimmune disease.
Canker sore is a canker sore, it's unrelated to HIV and you have your negative test.