Hey mama, congratulations on your pregnancy! Listen, ang fluctuating temperature at body chills during pregnancy can happen, pero kasi you're 6 weeks pa lang and may shivers plus that feverish feeling, please check with your doctor or OB soon, okay? Better safe than sorry lalo na first time mom ka pa, and they need to rule out anything na kailangan ng attention. A few of my mum friends experienced weird temperature stuff during early pregnancy, pero it's still best to get checked and confirm everything's good with you and baby. Don't worry, alam ng docs yan!