Suggest Treatment For Metatarsal Bone Fracture

I broke the metatarsal bone in my left foot 10 days ago. I was prescribed pain medication (which is gone now), and Diclofenac Sodium 50mg. I continued to take the Diclofenac after the pain medicine was gone, but didn t notice any difference in pain or swelling, so yesterday, I didn t take any Diclofenac. By 8:00 pm, however, I noticed that I felt out of sorts, and by 9:00 pm, I had a headache that came close to the severity of a migraine. I took my Imitrex, but it didn t help; I also took Tylenol, which normally takes care of a regular headache, but still did not feel relief. I awoke in the morning with the same splitting headache. After much thought and deduction, I realized that my headache was most-likely due to the fact that I hadn t taken my Diclofenac for the 24 hours, for the first time in 10 days. I took two, in order to attempt to get the medicine in my system as soon as possible, and in an amount that would be sufficient to settle my body s reaction. It worked within the hour. I can honestly say that I have never gone to bed with a headache, taken Imitrex and Tylenol, and woken up with the same headache before. I knew it was the fact that I had not taken the Diclonfenac for nearly 36 hours, and that is why I took two. As I already stated, the headache was gone within an hour. I now realize that I cannot instantly stop this mediciation, but am nervous about attempting to ween myself without direction. Please tell me what I need to do in order to ween myself. They do not seem like they will be easy to break in half, but I cannot deal with the severe headache that resulted from this experience. I am an elementary school teacher, and cannot miss another day of work because of a headache. What can I do to not experience this side effect when I decide to stop taking this medication?