Firstly Yes u have to get the x rays done to see how much the tooth is involved.If the infection is deep and severe then it will need root canal to eliminate the cause.
Next u have to get the prosthesis added in form of crown.This is when the tooth is in need of it.If the damage is less then it can be given shape without adding crown to it by placing composite material over it.
Next Steps
No need to be worried but just be concerned so that more damage and pain does not occur to your teeth.Also the involved teeth are your front teeth so it affects your looks as well.