that's bad timing. still, drugs don't always help anyway. it might be worth treating your heartache as pain and doing pacing - when you are doing something sedentary move around for ten minutes for every hour, and when you are moving around rest for ten minutes for every hour, or something of your own devising - when driven by grief it can be easy to get into a fixed activity or inactivity and breaking out of either is good for the mind. it is quite hard to do, and it is very personal and depends on your own lifestyle and terrain, but i find it very useful. the dog's needs help me to do it sort of organically, but i used to use a timer and probably will again after the op.