Pale and went to desert without sunhat only sunscreen but still got blisters from sun will i get skin cancer. i've been burnt about 10-15x in life?

Increased risk: Exact prediction not possible. Only answer is that your risk is increased. Avoid tanning lamps. Protect from sunburn. Look for shade. Use a big hat and sunglasses. Protective clothing. Sunscreens. Learn what skin cancers look like. Take a baby aspirin daily: 81mg, not coated, reduces risk 10%. Niacin amide also is used to reduce risks.