I received blowjob from an unknown status of gay whom i did'nt know. i doubt he might have bad oral health or cut in his mouth. how much chances do i have of hiv?

Low: It is no higher than receiving unprotected oral sex from anyone male or female that you do not know - it is all considered unsafe. However, even if the person has hiv, transmission to a male from recieving oral sex is relatively low. You need to know your partners, protect yourself and them and be tested regularly (3-6 mos.) as long as you are not in a monogomous relationship.

Some: It is possible to transfer HIV through oral sex if there is broken skin. Condoms are highly recommended.

HIV testing: When it doubt, get tested. There are many community resources that sometimes offer free or reduced rate testing. Although your situation may be low risk.

HIV DNA by PCR: When hospital workers are stuck with needles contaminated by HIV positive patients, they get a blood test called HIV dna by pcr which can tell if you have been infected within the last week. Antibody tests take up to 6 months to turn positive after HIV exposure. The HIV dna by pcr test is available at stdtestexpress.Com.