Sunburn blisters help?

Last Friday afternoon I got a horrible sunburn on my back, by Saturday night I had two pretty big patches of blisters below each shoulder. One got very big and I repeatedly drained it to keep it small. Now today (Tuesday), those blisters are definitely starting to go away and the redness on my skin is fading. I even started to peel. I had a family member help me peel it, but it was itching so we rubbed some lotion on. About nine hours later, I pulled off my shirt and I have smaller, whiter blisters on the top outside part of my arm and below the original patches of blisters. I popped two or three of the bigger ones and they were had clear liquid in them. Could these be a reaction to the lotion or are they another part of the sunburn? How long should I expect them to be around? Thanks!