I am a 41 year old healthy woman, average height and weight, no medical issues. Recently, when I've been in the sun for an hour or to using spf 30 religiously, I get very sick afterwards I feel nauseous and vomit, I have the chills, and all of m joints hurt and are inflamed. I have been vitamin B deficient and vitamin D deificent in the past, and I'd like to know more about the correlation between these vitamin deficiencies and sun poisoning. I've also read about chemicals in sunscreen that can contribute to sun poisoning. I have two small girls and would like to occassionally go swimming with them-- what can I do to avoid sun poisoning when I use sunscreen so faithfully??