Because when i was young i didn't care for my teeth, i had alot of issues with them, i got like 3 fillings and other issues because of it. They weren't permanent teeth however. One filling was later removed since the time of the tooth had come to fall out. However, my other two fillings are on the farthest left and right on each side on the bottom, and those are the tooth that fall from 17-21. Now i've had fillings in both of them for over 2 years and i didn't feel pain, but like 4 month ago and till today, on some days i feel pain if i bite anything with them even if VERY lightly, the temperature doesn't matter since it happens even with chips for example. However, on other days, i feel absouletely no problem with chewing and don't feel anything. sometimes it hurts on one side and not the other and vice versa, Should i be worried or what should i do?