that must be difficult for you.... I have dustmite and pollen allergy, I take Clarityn ( loratadine ). as long as your gynae says it's ok to take, should not have side effects to baby.
my rashes are quite bad too, I scratch so much it bleeds and I have many ugly scarring 🥲 I've used Suu Balm but recently I switched to Derma Lab (see picture attached) and this one works wonders. within 10-15mins it soothes the itch. I find it helps me a lot when my allergy flares up.