I am having tooth pain if I just brush my tooth after every meal every day will the pain go away?

No. Too much brushing can also cause problems as it erodes the enamel and exposes the dentin tubules. You need to see a dentist. I had the same problem. More than likely a cavity. Don't ever get root canals either. Try to save your teeth by oil pulling. If your tooth is already too far decayed and too close to the nerve/roots to do a filling, I advise you get it extracted. Read about the dangers of root canals.

Swish coconut oil in your mouth for 20 minutes each day. You will notice improvement, I just don't know if its too late or not only your dentist will be able to determine that.

Good luck