first time we've had pubic lice in 12 yrs of LS and i don't know who to message

ok this is gross and i'm laughing because if i don't i'll cry. 12 years in the LS, never had crabs, never even thought about them. dh has been scratching for a week, last night we had a proper look and yeah... pubic lice. confirmed. we've been to 2 meets and a hot tub party in the last 3 weeks so the contact list is a bit longer than usual and tbh some of it was just close-quarters not actual play. how do you tell someone who you didn't even sleep with that they should check. like the hot tub host i don't even have a number for, just an alias on the site. also pharmacist gave us the lotion this morning, anything else we need to do. i'm washing every bit of fabric in the house on 60. dh has shaved everything off out of pure panic lol