Yes, it's very normal. the cramping usually settles down early because it's an initial reaction of your uterus softening and preparing for a growing bub.

I had excruitiating cramps with my first baby for a week, that's actually how I found out I was pregnant because the cramps were so bad I went to the doctor. But they settled down pretty early in.

Same with this one, I had some mild cramping for only about 2 weeks or so early on.

Let us know how your ultrasound goes...good luck hun