Burned at the Weeknd concert in toronto

Location: Toronto, Ontario, Canada
Hey reddit,
I was at the Weeknd concert in Toronto last night. We were sitting at the furthest nose
bleed seats, on the highest possible row. There were periodic fireworks going off throughout the show at the edge of the stadium, and since we were right under the fireworks, they were falling and hitting me constantly, giving me tens of burns throughout both arms. This might affect my ability to do basic tasks for the next few days. Wondering what I should do about this.
Thanks