Gave oral sex with canker sore, what is wrong?

Canker sore. Did you mean to say was that wrong? Instead of what is wrong? If it is a lesion from the herpes virus you can indeed infect your partner with this action. Please have it checked out.
Canker sore. If you are certain that it is only a canker sore, then its likely of no consequence to your partner. But if the ulceration is a manifestation of something like herpes type ii or other std, then you could be transmitting it to your partner. Best to be checked!

Related Questions

I bit my gumline and got a canker sore (not outbreak). I gave oral sex. What are the chances of transmitting hsv1?

Use protection. Not because of the recent outbreak, but for your general protection. Hsv-1 & 2 shed even when there is no visible outbreak and this is when most transmissions occur. Use protection regardless. Read more...
Virus vs canker sore. The answer depends upon your viral status. Herpes is a virus, canker sores are not. If you have herpes you should not kiss or have oral sex, nor should you share cups, spoons, etc. It is a communicable disease. Canker sores are known as aphthous ulcers. They are probably autoimmune disorders, but are not spreadable. You need to see a knowledgeable dentist to find out which sores you have. Read more...

Well here goes.... so about a month and a half ago I gave oral sex with a canker sore in my mouth to a man I didn't know.... he said hes clean of hiv?

Risky Behavior. Giving oral sex with an active oral lesion is not advisable for you or your partner. Both of you should be checked out for any possibilities of disease transmission that you are unaware of. Your partner's statement that he is not HIV positive doesn't cover the gamut of problems you could both experience. See your physician and urge him to do the same. Herpes is easily transmitted! Read more...

Can having oral sex with someone who has a canker sore cause problems?

Protect yourself! Exposing yourself to a possible infectious agent from an open wound is never a good idea! if your partner's "canker sore" turns out to be a herpes lesion, you run the risk of getting a herpes (type 2) infection on your private parts. Such a herpes infection become potentially a lifelong relapsing & painful problem that you can then pass on to others--not a good tradeoff for an impulsive moment. Read more...
Yes. Depending on the type of sore, and whether or not you have already been exposed to the same virus in the past, you could pick up the infection. Once you do, it's yours for life. Read more...

My boyfriend told me that every time after he gives me oral sex he gets a canker sore, we have both been tested and are negative, what can be the cause?

Stress etc. Cold sores are a result of a virus that is already in his "system" and comes out as a result of stress. Canker sores may result from localized trauma/injury, lowered resistance, lack of sleep, etc. Read more...
Local trama. The activity of oral sex may provide enough trama to inner lip or cheeks that may trigger an outbreak of a canker sore or apthous ulcer. These are not infectious or caused by bacteria or virus, just body reaction to some trigger, like stress, trama, certain foods or food coloring or flavorings, etc. Read more...

How likely is transmitting HIV through oral sex with a canker sore present?

Bad idea. If the other person has previous been exposed to the same virus then they should be immune, however sores are an active out break of a viral infection and contact with others to the sore in any form should be avoided. Read more...
There is a chance. Hiv is a blood-borne disease, so any open sores or breaks in the skin/gums can transmit fluids that carry the virus. Read more...