I Fell Directly Onto My Chest A Few Months Ago

I fell directly onto my chest a few months ago and feel like I have a cracked or broken rib. There was swelling near my spine and rib plate, my back hurts during any kind of physical activity and I black out anytime I rub or put pressure on the areas. I’m a 16 year old male and I am wondering if I must see a doctor, or if it would be pointless. As many people have told me they can’t do anything for me.