Ironically I am on Lamictin...

It lasted about 4 hours. Took 2 serious painkillers - but not prescription ones - and a Klonopin for its muscle relaxant properties. Went to work thereafter, but was a zombie. Will ask my pdoc.
At first I thought it was related to me menstrual cycle, but there's no clear pattern there. I cannot imagine one last for days tho.

Even so, I'm in such agony. Groaning, even pushing my head against the headboard to feel better.