Hi I had strabismus surgery on my left eye six days ago. When I first came home from hospital later that day I felt fine apart from slight tenderness in my eye and a bit sleepy from anaesthetic. However as the days have passed I have had bouts of what feel like a migraine type headache with accompanying nausea. Sometimes my whole head feels tender. Its not extreme but it is very uncomfortable and somewhat debilitating. My vision is fine though and my eye seems to be healing nicely. I am using eye drops four times a day and all is going well except for pain in my head and upset stomach. Can you explain or help?