Brief Answer:
Can be herpes or staph infection.
Detailed Answer:
Hello,
The presence of pain in the waist with boils can be due to a staph infection or herpes. Home STD tests are not very accurate and this needs proper antibiotics and pain killers to control the infection. You need to consult a gynecologist for proper treatment.
I hope this answers your query. In case you have additional questions or doubts, you can forward them to me, and I shall be glad to help you out. Wishing you good health.
Regards.
Dr. Rakhi Tayal