I have been spotting on and off and I am 9 weeks pregnant I am wondering if this is normal or if I am experiencing a miscarriage.

I wouldn't even mess around in this situation. I would just go straight to the doctor.

Spotting in early pregnancy is quite common actually. What you need to watch for is bright red period-like blood accompanied with cramping.

In the end, it's best that you discuss this with your OB.