Thanks for query
Recurrent boil on different body sites is not related to your history of sex.
You had protected sex .so, don't worry about that.
You get your random blood sugar checked, as diabetes mellitus
is one of the causes of recurrent boils
.other causes of recurrent boil are obesity and hematological disorders.
Recurrent boil may be due to the reason that you or someone in your family is carrier of staphylococcal bacteria. Get rid of it by proper antibiotics..