hi everyone

my wonderful boyfriend just bought me some bath bombs and they have the rings in them which is really cool and I used one Monday night and my skin is very sensitive to perfumes in products I can't wear bath and body works and I break out in hives ugh so I woke up today and I have a small rash on my lady part plus I wore lace boyshorts too. do you think the rash is from the heat or from the bath bomb? I read on Google that they cause infections just like bubble baths so my plan was to use one one a week or I will probably have to use one once a month I got 3 left