Back pain at 27 weeks ?

I’ve been feeling sharp pains in my lower back that feel like the pain is going to my butt too.

More so the left side of my back ..

Even if I put more pressure on my left leg I feel the pain.

I had back labor with my first ..

I’m terrified to go through again.

Any advice for back labor / back pain while pregnant?

Also is it normal to be experiencing that kind of back pain at 27 weeks? Worries me that I might be having him early or something.