Cramping at 8wks

I'm almost 9 weeks now but I've felt mild to moderate cramping for the last 3-4 days. I'm so nervous that something might be wrong. I called my Dr but I'm waiting for her to call me back. I'm a first time momma so I was wondering if any other moms on here can tell me if this is normal. I've had no symptoms other than occasional dizziness since I found out I am pregnant. And now I have this cramping. First I was worried about feeling nothing and now I'm worried about feeling anything! Lol. 
Can anyone help ease my mind? 
Thanks in advance