I had the same problem with headaches-In fact when I tried to put my head down to rest that was when it hurt worst. I've decided that the vasodilator properties of the pain meds (causes the vessels in your head to open up) was actually making the HA worse and switched to regular liquid tylenol from the Rx Lortab. Although my incision is a little more uncomfortable, that is nothing compared to how the pain in my head was. I'd still love a coke to chase it entirely but dropping the Narcs has helped me:thumbup: