Uy, I feel you, ang pregnancy pains are real talaga, lalo na first time! A few of us mommies experienced buttocks pain during early pregnancy, kaya not uncommon, but since you're already worried and it's been two weeks na, better to mention it sa OB mo sa next checkup para ma-rule out kung may nerve involvement or something (sciatic pain is common in pregnancy kaya baka yan, but let the doc confirm). In the meantime, try switching up how you sit, pillow under the good side, or sit more on your thighs instead of directly on the bones, at stretch your glutes gently when you wake up and before bed.