Erica! Hang in there! I agree with Joanna and Shelby. You're not doubled over in pain, you have had cramps (every pregnancy is different!!!) but that's one of the signs your uterus is growing, and stretching those ligaments. And it's your second pregnancy, so the symptoms will be different anyways. I wouldn't worry, especially since you don't seem to be bleeding, but only spotting.
We're waiting to hear from you!