Hello & welcome,
Getting the extraction site swelled is seen usually if the wound gets infected or swelling may be transient and may resolve on its own within a couple of days.
Swelling can be seen in the bone grafted area due to grafting material itself but even it is transient & will resolve within a few days along with pain.
If swelling persists or increases, then it may require to intake Antibiotics & Anti-inflammatory drugs & painkillers by your dentist
after being thoroughly examined.
Keep those teeth devoid of pressure as even light pressure can initiate or aggravate the pain.
Here, i would advise you to visit another dentist specially oral surgeon if you can , as soon as possible & you can ask him to prescribe you necessary medicine until your dentist who operated you comes back.
Keep your oral cavity clean as it is important to avoid any secondary infections thereby aggravating the condition.