Hello and welcome to HCM.
Thank you for your query.
I understand your concern and your frustration. But, let me inform you that the loosening of the vagina, or even tearing of the
hymen (after which a woman is said to have lost her virginity, in layman understanding) can all take place even without the act of intercourse or even the act of insertion of fingers inside the vagina or
masturbation.
This can take place from various acts like cycling, gymnastics,
yoga, stretching exercises, various forms of dance, and in young girls from various other activities that can loosen the vagina.
A doctor who would have attended to you at a child, would not have found it necessary to look into your vagina or at your genitalia unless you suffered from symptoms that could be related to the genitalia, so I do not think we can blame the doctor for this.
Think back, and I am sure you can figure out some activity that could have caused this. But, that is all in the past, and more importantly, there are various procedures through which we can get young vagina to become tight again. One such procedure is the stitching of the vagina, which in a few days/weeks time (once healed) results in a tighter vagina. There are also various vaginal restoration gels/creams available in the market, that result in making the vagina tighter.
So instead of fretting about the past, we can work on the present and the future. I am sure either a minor procedure or the gels/creams can easily help restore your vaginal tightness. Please refer a doctor for the same, who will surely guide and supervise your improvement.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: http://doctor.healthcaremagic.com/doctors/dr-shoaib-khan/64581 . I would gladly help you.
Best wishes.