Tooth pain when biting down ( got a filling recently on the tooth )?

Ok, so the dentist told me that I needed a filling in that tooth, went in, got it, ( first time with novocaine ) and I think I was so numb in my mouth that I didnt really feel if my teeth could clench together properly. Anyways later on the numbness went away and I felt that it was kinda akward to bite down, but after a few days it got smoothed over.. Anyways, now its been 14 days since then when I bite down on anything somewhat hard, nuts, jerky, carrots ext. I have a fairly dull but very unsettling pain.. It was one of the white fillings, they said it was a small to medium cavity ( no biggy they said )... Anyways it is not sensitive to hot or cold liquids and stuff... Anyone know what this could be ? Please answer its so annoying, I don't even chew stuff until its mushed up on that side of my mouth.. And before the filling I had no pain.. Man I hate this !!