Hello,
It can be a skin tag or a benign skin growth. Skin tag is a benign condition and you do not have to worry about it. These tiny skin growths generally cause no symptoms unless they are repeatedly irritated. The commonest area where they occur are armpits, groins, neckfolds etc.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
If you had it as a virgin, you might have a skin tag. See a doctor to get it removed.