Contact his surgeon's office and let them know how bad the headaches are, and any other questions you have about how he is recovering/what you need to do for him. My husband had a horrible headache afterwards, and three years later, still has headache issues for assorted reasons. We have learned, and are still learning, to speak up, be proactive in the post op issues that he continues to work through. So many possible explanation for your husband's pain...CSF leak, any number of labs off/needing adjustment. My husband has passed out from low sodium levels...everything seems to bottom out during the night, so I would have him wake me up before getting up to go to the bathroom. Be the polite, but squeaky wheel and you will become an awesome advocate for him!:) Wishing you and your husband all the very best, and I will be watching for progress notes on here.