My daughter miscarried this morning she was 6 weeks along, she having heavy bleeding and cramps, should she go to hospital or the doctors tomorrow

Does she have a fever?
How is she now?

She should definitely go see a medical professional as soon as possible. Post-miscarriage infections can happen and are treatable with prescription antibiotics. Go to the emergency room right away if the bleeding can soak through a menstrual pad in under an hour.

She should absolutely go right away. A D/C may be needed if all the tissue was not expelled.