5 weeks pregnant with cramping?

I'm 5 weeks pregnant and am experiencing mild to moderate cramping similar to menstrual cramping. Once in awhile if I move into a different position there will be a sharp twinge. I'm not having any bleeding/spotting and still have other pregnancy symptoms but I'm just concerned. My doctors office doesn't see patients until the 10th week so I'm trying to figure out whether this truly is normal or if I should push the issue and 'force' them to see me early. This is my first pregnancy so I'm just not sure what is normal and what isn't :(