Dear Sir, According to what you have mentioned it is a chronic gum and bone problem you have. You are too young to loose a tooth due to bone problem. May be your rest of the teeth are also affected by the gum disease. Definitely you can give chance to rest of your teeth before they are lost too.. Please meet your dentist and also a gum specialist who can do a thorough examination and do deep cleaning and necessary treatment to improve your oral health. Bad odour is also due to the same gum problem.

Your problem seems to be dry socket. Please consult your dentist he will have to clean and irrigate your extraction socket. And will prescribe you medicines for the same

You need a thorough clean up. Bad odour and bleeding gums are signs of a gum infection Please be more vigilant about your oral care regimen. Loss of a tooth this early in your life can have disastrous consequences in the long run. Get a clean up/ scaling done at the earliest with your dentist and gear up for a replacement for the missing tooth.