Its normal. I was spotting when I was around 7 weeks too and the doctor told me just to rest and take it easy . I am now 28 weeks pregnant
I asked my doctor about the cramping and spotting and she said it is all totally normal. If the spotting gets too heavy (like a normal flow of your period) I would ask your doctor about that. And if the cramping gets really bad or you have really bad stomach pain she advised me to go to the emergency room