Lower back pain

Dora • Married with my SO and have 1amazing 6 year old boy and currently pregnant with our second blessing 🤰🏻

I'm 6 weeks and 3 days pregnant have lower back pain I'm not sure if it's due to the pregnancy but I'm also a nurse with kids and I'm constantly putting tension on my back is that normal or not it's mild nothing too bad just a little concerned please let me know if any of you have experienced this btw happy early merry Christmas