I had unprotected oral sex with my bf 3-4 times in past one year. We did not have vaginal sex. Just oral. In November last year I developed a blister on my vagina and now I have a sore gig blister on my palate behind upper molar teeth. It is causing pain I swallowing or speaking. Can it be a sign of std or it may be due to any other reason. We have not been checked for STDs yet.

Dr. Prashant K VaidyaHomeopath11yrs exp

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Causes: STDs include just about every kind of infection. Bacterial STDs include chlamydia, gonorrhea, and syphilis. Viral STDs include HIV, genital herpes, genital warts (HPV), and hepatitis B. Trichomoniasis is caused by a parasite. The germs that cause STDs hide in semen, blood, vaginal secretions, and sometimes saliva. Causes of blister: No one knows what causes these small, painful blisters inside your mouth. Triggers include hypersensitivity, infection, hormones, stress, and not getting enough of some vitamins. Also called aphthous ulcers, canker sores can show up on the tongue, cheek, even your gums. They usually last a week. Suggestion: avoid hot, spicy, salty, citrus-based, and high-sugar foods. avoid tobacco and alcohol. gargle with salt water. eat ice, ice pops, sherbet, or other cold foods. take a pain medication, such as acetaminophen (Tylenol) avoid squeezing or picking at the sores or blisters. 

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