Re: Can a doctor tell if you are a virgin or not?
No, a doctor cannot tell if a woman is a virgin. Very occasionally, if a woman has a perfectly intact hymen, it MIGHT be possible for a doctor to say that she is a virgin. This, however, would be quite rare. Many, many things can stretch and tear the hymen, and women are born with varying degress of hymen anyway (some have no hymen at all).
I would not advise trying to get a "doctor's note" to show the bullies at school. That's only likely to provoke more teasing, and teens move on to the next piece of gossip before too long anyway. If, as I hope, you are taking your daughter to the gyn because you are concerned for her health, you may want to NOT have her sign the slip, so she knows she can speak freely and confidentially to the doctor.