A friend of mine lost virginity just a day ago and now she is very much worried what if her friends and family notice that she has lost the virginity. One of her friend said her that after losing virginty legs split apart that is thighs no more touch each other, while walking one can easily make out by the split legs, n also hips widen n few other say breast gets bigger. She says she had read somewhere that while periods it would discharge more as the hole gets bigger.Even I have heard that girls become fat after losing the virginity. I really want to know whether all of the above are true or just a myth.And please explain me what are the physical changes we see in girl after losing virginity.

All of those are myths. There are no obvious and visible physical changes after losing one's virginity. The only change might be that the hymen has been broken. (It may have been broken before first intercourse.)

No one will be able to see any outward change.

I am scared for you all, how old are you, having sex ? 12 ? None of the things you have heard or read are true, If someone knows so little about having sex, they should not be having it.

What form of birth control are they using ? Since pregnancy, will make you "fat" and everyone will know that you had sex if you end up pregnant.

But anyone who told you these things are trying to scare you, lying to you or just have no education about sex at all.