Help!!!! 😩😩

Bree β€’ Mommy of 3: 2 girls and 1 boy. Trying for baby #4β€οΈπŸ’œπŸ’“ RN class of 2019

4 days late..have had miscarriage before so hoping this sticks but have had achey pains in my lower back and hips.... is this normal? Last period was December 28