Usually when the cherry is popped the skin covering the vagina (hymen) breaks (if it hasn't already done so before intercourse) and is usually ejected during child birth. It seems that maybe with you that isn't the way it's happen but this is only my guess I'm afraid as I am not qualified to make a diagnosis.
I would suggest that you speak to your doctor (or have your parents make an appointment for you and then request to see your doctor alone) and get a more qualified opinion on the matter. If your doctor is a male and you prefer to discuss this with a female (which would be understandable) then you can request to see a nurse instead. [ ammo's advice column | Ask ammo A Question ]
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