I'm so itchy it's driving me mad. I can't eat yoghurt as it gives me migraines but have been applying it to the sore area which helps but only briefly. I've started taking the pro biotic tablets but assume they take a while to work. Can I use tea tree oil? before pg I used to put a few drops in the bath or in a small jar of a gentle moisturiser just to try & stop the irritation, haven't used tea tree or lavender in the bath as not sure if safe during pg.