Welcome Allison,
Make sure to bring this list with you, as suggested by our wise person Sal. Also make sure to bring a list of questions, since I know my brain goes blank when I step in the exam room.
Heat can cause a pseudoexacerbation, which isn't a flare up, just an uptick in symptoms due to an increase in body temperature. My neuro prescribed Slurpees whenever I get overheated, and I keep Icees or flavorice in the freezer, as well as a neck wrap that cools the pulse points in my neck.
Keep us up to date...