Help?! Is this beginning of a miscarriage??

Sh

I am 5 weeks pregnant, I’ve been having sore boobs, morning sickness, my line this morning was even a little darker than the previous day.

I’m having a good amount of back pain, it’s not cramping from my uterus, but an intense pulling in my lower back muscles. I can still walk and move it’s not sharp or piercing.

Is this normal? Didn’t happen to me with my first. The pain came outta nowhere.