Thank you for submitting your question. As a doctor, I can tell you that if I am highly concerned about a serious brain disorder(e.g. stroke, bleeding in the brain), I would send the patient for a head CT right the way(within the day). The fact that your husband's doctor chose to schedule a head CT in 2 weeks means that he doesn't think the situation is urgent, and his level of suspicion is not very high.
2 weeks is a standard period of time to obtain a routine head CT. Depending on your husband's symptoms, his doctor most likely wants to rule out brain diseases to be thorough.
I understand you are concerned about the result of the scan. Your husband can request a copy of the head CT result from the radiology department. Result should be available within 2-3 days of the test.
I hope this answers your question.
My answer would still be the same- very urgent cases would require a brain MRI within 24 hours, not 2 weeks. An MRI is a better test than a CT. It is able to visualize the entire brain including the brainstem, which is located near the bottom of the skull.
It sounds like you are very worried. You should request a copy of the report, or call his doctor's office.