Aiyoh, that sounds uncomfortable lah! Since you're only 8 weeks and it came on suddenly with the sweating and redness, please go see your doctor or midwife soon, better safe than sorry during pregnancy, okay? Could be something simple like heat rash or hormonal changes, but your doc needs to check properly to make sure everything's fine with you and baby. Jangan worry too much, but do get it looked at soon ya! Let us know how it goes, a few of us had weird skin stuff during early pregnancy too, so you're not alone.