Painful cramps - 13 weeks

Nessi

Hi everyone. Im freaking out a bit, because last night I had very painful cramps. It felt like my whole belly was constantly cramping and also the pain went to my back and legs. Two days ago i had a scan and everything was looking good, but this is really troubling me. Anyone else had to struggle with painful cramps in the second trimester? (I just started my 13 weeks).