Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand..
As per your complain swelling over the right side of roof of mouth along with
severe pain especially during night is commonly seen in case of
dental abscess and when there is infection in tooth leading to formation of pus below the root tips of the tooth the pus puts pressure over the nerves causing pain as well as when you lie down due to posture there is more hydrostatic pressure generated and there is severe pain..
There is a possibility that the diagnosis is missed in the
x ray and you can get another x ray done with changed angulation..
You can also consult an Endodontist and get evaluated and thorough clinical evaluation along with x-ray can be diagnostic..
As of now along with antibiotics you should also take higher painkillers like
Tramadol..
You can also revert me back with an x ray and ask a question by clicking on my profile..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.