D and C , headache after eating.

Had D and C after miscarriage as doctor suggested , its been 2 days but my wife is having severe headache after having food , that is during breakfast , lunch and dinner due to which she is unable to eat. after taking a nap she is feeling ok but as soon as she is eating anything she gets headache again taking all the medicine on time and i called the hospital and doctor says its unrelated to D and C , however , this was never the case as the headaches during eating started the day she had D and C procedure. she says she has never has such chronic headache in her life. i feel like tgus D and C procedure did something and its not going away even with painkillers. i am really worried , do i change hospital ? because the hospital where she had this procedure are not at all helpful and they dont even even help anymore and she feels like vomiting .. please help !!