Hello! At me 16 I week. Recently, began to notice, that...

[lida]

Hello!
At me 16 I week. Recently, began to notice what painfully to sit on "coccyx". If inconveniently I sit in any pose when presses on coccyx. What is it can be?

[child]

At me too also happens, 30 minutes are longer on
Firm I can not sit. Sometimes all time hurts and
Nothing helps or assists while itself will not pass or not take place.