Elyse, It is common for pain to increase in the evening when the body is beginning to relax and the brain is slowing down. The distractions of the day are mostly gone and your busy little mind has to have something to focus on and it likes to focus on pain. I usually start my heaviest dose of narcotics in the evening for this reason. I do drink a lot of coffee too and really hope that I do not have to give it up although many people who post here do and says it makes them feel better. For me, this is one of my last existing vices and I have fallen in love with my Kuerig! Have a good evening, Lisa