i had deep filling about two month ago.(cavity at side and bottom of tooth) i still have very mild pain when i am eating right now .it is better last week. but this week mild pain came back .i am so depress .someone could give me advise!

Go back to your dentist for an x-ray. You're tooth shouldnt hurt for 2 months from a filling. You might need a root canal if the nerve is exposed and ur dentist might have missed it. So go back and get a x-ray done.