Talk to Orthopedic Surgeon on Pain In Left Wrist Joint

My wife is feeling pain in wrist joint for 3 months now. She is having a 7 months old baby boy. First I thought its because of lifting her baby. Went to a few doctors, they say nothing serious and they prescribe almost the same, a few vitamin tablets and a few pain killers..! One joint expert [ pehlwaan ] said its a muscular pain and its treatment is some kinda injection in that wrist muscle. We need suggestions and if anyone can guide or suggest a proper doctor to check her. Thanks and Regards.