Suggest Treatment For Recurrent Painful Bump On Labia Minora

Hi, I am married n sexually active with husband since 10 months. I have recurrent pimple like bumps on my inner lip of labia minora, it was swollen n very painful . I visited my GP for the same reason. She suspected herpes n did swab tests.the test result was negative. She re examined it and pinched it out to remove the puss n sent it for testing.my pain was relieved after the pus came out. I am currently on antibiotics n sits bath and soap free wash. The symptom has reduced . I am really worried that it will recur . What do u think it is and what measures I may take??