my teeth hurt and i need advice! and my filling is coming off along with/ 1 tooth has a sharp pain?

i only have one sharp pain in 1 tooth! INFO: alright i dont have dental insurance and so we went to the top of the line dentist clinic in MEXICO!!! no i never ever want to go there agian!! this is because the dentist fixed and filled 4 TEETH. i had 3 cavities and had to be filled with some white filling. BAD THINGS: my teeth feel like the are uneven 2 molars on my right are slightly higher that the molars to the left. THE PAIN is on my top molar to the left and somehow it came out CRACKED!!! i dont know why but i had it like that for my whole life and she filed it (like your nails) and filled the outside with white filling. So is it normal for some of the fillings to crack off to fit and are ALL THE FILLINGS LIKE THAT?? and why does my top molar hurt so bad i want to cry?? is it a nerve because the top has a sharp pain on the TOOTH every time i touch it soft. will it go away?? thank you for reading and any answers will help
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this is what it sounds like: 1. your teeth were overfilled on one side, which is misaligning your bite. you need to have the overfilled teeth grinded down to match the other teeth. 2. A cracked filling will likely become infected and need a root canal. If it's not infected, maybe you can get a sealant put over it to cover the crack. 3. The top molar might hurt if the dentist overdrilled the tooth. I had very painful dental pain from a filling and when i went for a 2nd opinion, it turned out the filling was pressing on a nerve so i was in chronic pain. I ended up with chronic earaches, sinus infection, dizziness, and later on, an abscess in my gum thanks to my dentist's mistake. If you can't go to the dentist, try calling your local dental school and they can help you out or offer some resource.
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