The white bumps taht appear on the corners of the mouth are usually due to the viral infection - most of the times
herpes.
The ones you are getting are after the
oral sex which suggests that they are due to herpes genitalis.
Usually the angular stomatisis cuased by the virus vanishes. However, you are having this repeated infection. Your partner is most likely the carrier of this virus.
If it is not virus, even a bacterial infection like
gonorrhoea also can cause such lesions after oral sex. It can be any other infection also.
Any Sexually Transmitted Infection may be associated with
HIV, hence rule out HIV by proper tests on you and your partner, both
What you have to do is:
1. Increase your immunity by good high protein diet, Vit. C and Vit B complex
2. If it is bacterial infection, take a course of antibiotics with the advice of your doctor.
3. it is viral infection, apply soothening
ointments and take antivial medicines with the advice of your doctor.
4. Your partner has to get thoroughly checked up and investigated and treated for the probable sexually transmitted infection he may be having.
5. If either of you happen to have HIV, plase see the concerned doctor and start the management. Immediately you may not require any medication, but follow up investigations like CD4 count becomes obligatory then.
Under any circumstances do not ingore it as a trivial lesion and seek for a proper doctors opinion and advice.