Worried...

Elizabeth
Hey ladies. 
I'm between 9-11 weeks pregnant and I have been having light cramps on the sides on my ribs but just below, they don't hurt bad but they cramp every now and again. 
I took a pregnancy test just a cheep one from the dollar store to make sure I still am pregnant because my morning sickness has went away, I still am tired and occasionally get nauseated. However, it shown pregnant right away but wasn't DARK, it was a visible two lines though. 
My first ultrasound is next Tuesday should I be worried??