Back pain

This is my first pregnancy & everything thus far is fine (6w5d) except back pain starting 2 days ago it started with left sciatica pain and then it switched to the right and it all went away and I had left side pain in the from that seemed to wrap around to the back & now just the middle of my lower back hurts 🙁it’s my first pregnancy and we already told everyone so I’m just worried about something happening. Is this stuff normal?