thanx for sharing your concern,
this could be due to two reasons , as you have mentioned , you have got two fillings done and a crown placed.
have you ever noticed ? which tooth pains actually ? that means the filled teeth or the tooth with crown? yeah! i can understand it is difficult for you to make out, if all are in the same arch and same side but that could have helped me to give exact diagnosis.
with the information available to me i can suggest you two thing.
1. there could be deep dental caries
underneath the filled tooth. your pulp is exposed to noxious stimuli causing intense pain in night during sleep , this generally happens with deep dental caries, very close to pulp and infected . if a filling is placed on this it causes intense shooting pain ( acute pulpities).
which is more suggestive in your case .
second if you feel pain during chewing ,and other tooth movements too,
then there could be a problem with your new crown, occlusal problems (high points )or inappropriately placed crown .
you remedies are here,
i can understand you would certainly not like to go to for dental visit but in this situation just go and take an intra oral xray of concerned tooth, to know the reason and then accordingly you can plan your treatment.
meanwhile you can take tab combiflam
500mg every six hourly , for your pain .
this should help thanx