How To Get Rid Of Blisters?

Hello..I got a very bad sunburn over the weekend and at this time most part of my body healed, except the back(from shoulder to lower back) where I have so many blisters. I have applied Aloe Vera Gel however every time when I move the pain is killing me...Also I cannot sleep on my back...Should I see a doctor or should I just apply Aloe Vera Gel for the next couple of days?.....Male Late 20's No major medical history