My first choice would have been the hydrocortizone, but I’d try the following, starting first with what you have on hand. You may just want to go for it and pick up the Caladryl.
Vinegar
Kiwi (or papaya) slice
Witch Hazel
Epsom salts
Calamine lotion
Caladryl lotion
Calamine and caladryl did not work. I do have real apple cider vinegar with the mother in my pantry. I’m going to try that before the boiling water remedy I just read about.