Sorry about your sting, it looks really painful. However, I'm with your husband, I'm a "be prepared" person too. I used to vacation with friends every year and I alway had a huge First Aid kit that had to be easily accessible. They laughed, joked and even got aggravated at me because I was so obsessive about it until the day it was needed.
Yeah, I'm the person that right before all three cars were ready to go handed each driver a sandwich bag full of folded Walmart bags for trash, another with bandaids, antibacterial wipes, a small bottle of Ibuprophen, and triple antibiotic ointment, etc.