Is your script meant to be taken every day? If so, then is barely a 10 day supply, so the 26th would be fine. If that's supposed to last the whole month, then obviously that's not enough time.

If you take 2.5, every 4 hours, that's about 90 mg per day. That's also a lot of ibuprofen. You might want to tell him the pain is getting worse, or that the vicoprofen is not working as well as it used to. You might very well get switched to a 10 mg pill. How long have you been on vicoprofen from this doctor? You gotta watch out for stomach, that is quite a bit of ibuprofen you're taking.

-yawkaw