Skin patches that have been there a while, like this one since 2017, can sometimes flare up because of the hormonal shifts of early pregnancy. At 6 weeks along, this isn't the time to try new remedies on your own, even natural or home-based ones, without checking they're safe for pregnancy first.
Next Steps
Please see a dermatologist and mention clearly that you're
pregnant, so they can suggest care that's safe for you and the baby. Keep your obstetrician in the loop too, since both doctors should know what the other is treating.
Health Tips
Avoid any tablet, cream or home remedy you haven't checked is pregnancy-safe. Go back sooner if the patches turn more red, start oozing or feel warm.