Cramping @ 6wks 5 days

Hello. I'm 6 weeks and 5 days and not a day goes by where I'm not having some sort of cramps. They aren't terrible by any means and definitely dont double me over. Its just more irritating and kind of scary, I should add no bleeding. My last pregnancy that lasted this long was 7 years ago and was a full term baby. I've had 3 miscarriages and these are nothing compared to the cramps I had thru the miscarriages. I have an ultrasound on Wednesday to make sure all is okay, but I need some reassurance or something. Is it normal to cramp so often in early pregnancy? Some feel like they are in my ovaries and some feel like they are in my pubic bone (best way to describe it). Word of advice ladies?