Pelvic pain

Alexandra • Married 4 years, and mommy to a handsome little boy!
Hey all! 
In the last few days I have noticed when I stretch or twist in bed I have pelvic pain like a pull if that makes sense? I'm a first time mom so don't know if that is normal or if i need to call my doctor?? I'm about 7 week is what this app says.... Don't know if that makes a difference??