It's really quite impossible for us to diagnose something over the internet, so you should talk about this to your doctor as soon as possible.
With that said, I will mention that bleeding following sexual activity usually indicates that something's being irritated or scratched in the process. Are you and your partner practicing safer sex? For manual sex (i.e., penetration with fingers or a hand, or any other stimulation of genitals with fingers or hands) your partner should always wear latex gloves, both to help prevent injury from fingernails or rough skin, and to prevent transmission of STDs and STIs.
But do talk to your doctor about this. It could just be minor scratching or irritation, but it could be something more serious. Either way, it should definitely be checked out by a doctor or other healthcare practitioner.
Oh, and trust me, there's no fruit down there. Around here, we ask that everybody try to use the correct terms for body parts, so as to avoid confusion and be perfectly clear on what's being discussed. In this case, what you called a cherry is really properly called a hymen, which may or may not have ever been present enough to cause pain and/or bleeding during sexual activity. There's more information on that in the second article I'm linking to below.
And here are a few articles that you might want to read over:
Safe, Sound & Sexy ? A Safer Sex How-To
Magical Cups, Bloody Brides
Pink Parts ? Female Sexual Anatomy
"The only unnatural sexual act is that which you cannot perform."
-- Alfred Kinsey