I really don't like the idea of using stims for fat loss. In your particular case, the use of aspirin is not obligatory, but it can enhance the effects of the stack. For the next time, I would highly suggest you to use such things as Cardarine Gw and N2Slin - at least they were specifically designed and created for fat loss and recomping, so you will get no side effects at all coupled with really good results. Additionally, Cardarine GW will greatly enhance endurance and recovery, so you will have a much easier time performing cardio training, and will have an even easier time losing fat. My wife and I have used this stack (Cardarine GW and N2Slin) multiple times, and the effects were always very good without even minor issues.