Lower Back pain

Marissa • I have 2 girls, 12& 7 and my rainbow baby boys 5 and 2. 2 mc, 8/14 & 1/15.
Just wondering if anyone else has had lower back pain? I've had it consistently most of the day and I'm worried it means another miscarriage :( I had a bit of pink spotting but it's stopped for now. I'm getting blood work tomorrow morning, hoping I can keep this baby!