Do I have to do a deload?

Yes, it is always advisable to do deloads when you follow a strict training regimen. During the so called accumulation phase of a meso cycle, you build up fatigue. At some point, if you train hard enough, your fatigue will exceed your ability to recover from your previous training. To avoid this, you need periods of reduced training stress without having to stop training completely. This will reduce your risk for overtraining and injuries.