I'm sorry to hear of the problems.

I think I might have done the same thing just last night. I got very sleepy after taking my gabapentin a little late but then started suspecting I might have taken it early as well. If this ever happens again I intend to maintain a checklist. My memory has become very holey. You can always set an alarm or get a pill dispenser at the drugstore too.

Let the doc know and it seems unlikely that he'll change your Rx. Monitor your condition closely though as it is possible there's some sort of medication problem.

Good luck.