First week on Lyrica, first occipital nerve block

Well, this was my first week on Lyrica. I am taking 25 mg. at night and am to start taking 50 mg. a week after two weeks. So far, I haven't noticed side effects, but it is a low dose. Then again, I also haven't had a noticeable effect on my daily headaches. I am also using Zanaflex in the meantime at 4 mg. in the morning, 4 mg. in the afternoon and 8 mg. at night. I have wanted sweets a lot more, but that might just be stress. I tend to crave sweet things when stressed anyway.

I had my first occipital nerve block on Valentine's Day, but I don't think it worked since I've still had a headache every day. Only difference is the length before I noticed a headache was longer. I'm to get another, but don't know if that's normal or not. How many do people need to get before they know it works?