Thanks for your query.
Read and understood your concerns.
If you never has the sexual activity, you can not get STD, so please stop worrying about STD.
Your detailed history about the duration, size, exact site and the present situation would have helped me more.
If the swelling is above the pubis, it most probably may be an ingrown hair.
Consult your Doctor for two reasons.
The First: you get a proper diagnosis and
Secondly, you get a prescription based medicines to get a cure.
-Please do not try to pop or so as it may spread to the nearby structures.
You would have posted the clear picture of your condition here.
I hope this answer helps you.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.