I am on my fifth pregnancy and had the exact same kind of pain and cramping at 6-9 weeks. My doctor did an u/s at 8 weeks to check things out and everything was fine. Many women experience cramping early on, but I would still let my dr know of the issue if I were you. Good luck!
I think it is normal as long as the pain doesn't get too bad. But i would still call your midwife or a doctor.