I think it's always good to bring up this kind of stuff with your doctor, just so that they are in the loop and can offer their trained opinion. I will say though that I had headaches after my surgery and had the same concern you are having. I had an MRI done of the brain and of course it was normal. His body is going through an adjustment period now and he could be having a headache from testosterone levels shifting, being stressed (this is a very stressful situation!), being fatigued or any of a million other reasons. Sometimes a headache is just a headache. But, if you're deeply concerned about it, ask the doctor what they think.
28 years old
New York City, NY
Ultrasound on 1/23/12, I/O on 2/1/12
Classical seminoma, 4.5cm, RT invasion, LVI, no spermatic cord margin invasion.
CT scans clear
pre op bHCG: 57, post op: 2.4
Clear: 5/17/12, 8/23/12
11/29/12 -- CT scan shows 1 enlarged retroperitoneal lymph node 20mmx15mm, stage changed to IIA
12/17/12 - 3/17/13 -- EPx4 @ MSKCC
Clear: 3/7/13, 3/28/13, 5/2/13, more to come...