Knee cracking sound and hand pain. right

Experiencing joint pain since first delivery, two years,tests done no specific condition detected,xray normal of knees but told not to fold knees, difficulty using Indian toilet,cracking sound in right knee,using knee cap but pain increases so avoid using,hand pain while doing small tasks like lifting bed,squeezing,lifting baby,washing,doing work with water like washing utensil,getting stressed,mobile addiction as sometimesdon't want to do work bcoz of pain,want to get completely fine..one doctor said this pain will remain forever..looking for help since two years,feels extreme pain in ac,or the area of body joint which is not covered,want to get pregnant again,will it be safe,also I am breastfeeding since two years.. looking for a doctor who can help in gaining real change in this painful time..in Sha allah