All you have to do is have your dentist check your bite and he/she will know if your bite is high. It can be easily adjusted. At the time the fillings were done, you were so numbed that you can't tell if your bite is high. It's common to go back to have your bite adjusted, it's not a big deal. If you continue to bite high and don't do anything about it, it can mess up your jaw, promote TMJ,etc. So don't live w/ the discomfort, do something about it. They usually do not charge for adjusting if he/she did the fillings or crowns.