Hello, Thank you for asking your query at DoctorSpring.
From your symptoms, it appears it mostly is sun poisoning. Sun burns are first degree burns of outer skin. You will observe skin turning red. This can hurt when touched. But, these are mild. Slowly blister sets in , this would be th second degree. After this when bruises occur, its complication of above two, sun poisoning. Usually you can see these symptoms coming over a day or two after sunburn. After a week they go away.
I suggest you use aloe vera lotion in affected areas and keep the area moist and protected. Check in for the ingredients, of lotion, if alcohol is there don't use it.
Hope this helps. Please feel free to ask follow-up questions.