Miscarriage?

Tania
Okay my pregnancy test was positive on the 28, have not been seen yet because my first appointment is on Feb 12. But I can't stand my back and stomach pain and cramps are strong is this normal or is this signs of miscarriage? This is my 3rd baby and my body is acting really weird this time 😔 I also never had a miscarriage before! What do you girls think?