welcome to healthcare magic forum
thank you for your query
from description only it is difficult to make any diagnosis .
it look like chronic folliculitis
or keratosis pilaris
or dermatitis .
steroid should be avoid in pregnancy
you are right that you need to consult dermatologist
you required combination treatment .
peeling or laser treatment
may also help you
i advise you to wait till the delivery of baby .
i hope i answered your query