I Went To A Water Park Yesterday Without Wearing Sunscreen

I went to a water park yesterday without wearing sunscreen and got all sunburnt. My nose is now all swollen and feel weird and oily. I looked it up and it appears I might has sun poisoning. I have been having sensitivity to the sun this week for some reason. It might be due to a new medication I'm on called Risperidone. I'm not sure if that would affect it. I'm trying to drink lots of fluids. I put aloe vera on it. I'm putting ice on my nose. Is there anything else I can do and how long should the swelling last?