I Have, What We Believe To A Possible Chemical Burn

Question : I have, what we believe to a possible chemical burn, due to a reaction from sunscreen. I was at the pool 2 days ago,for a maximum of 2 hours. I applied a Neutrogena broad spectrum 100 spf mist sunscreen on my legs 2 times during this time frame. (also, this was the only exposure my legs had to sun in days as I am a XXXXXXX wearer). that evening I noticed my legs looked a bit red and sunburned, even though I had used sunscreen. the next morning I could barely get out of bed due to pain. but no blistering. (I have never blistered in my life). later that day, still being the day after, I noticed my legs start to tingle and burn..and looked down and I was developing blisters. by the time night came around one particular blister became as large as my fist. today the blisters are still present and painful to be up and around. the only relief is laying down. my wife is a registered nurse. we know typically to not pop or mess with blisters..however, due to the very large size of the one blister..if we shouldn't drain it. it is bound to pop in bed at night. also, I cannot put pants on because of it. we are trying to avoid going to the ER for obvious reasons of covid, as I have asthma and definitely don't need that. what can we do if anything? again, my wife is a nurse and more than capable of doing this if its advised...?