Hi madam in this x ray shows upper and lower last molar (teeth) are decayed.
In upper last teeth decay shown in distal side.thats why you cant identify that decay
In lower last teeth there is pit and fissure caries(tooth biting side grooves shown dark lines&catch in some points).
This decay extend into inner side of teeth &affect tooth nerve
Thats why you feel pain in that side of your face
Next Steps
please visit nearest dental clinic. and do RCT...
otherwise extraction
you have pain then take
analgesic
Health Tips
prevention is better than cure
.
proper brushing reduce dental problems