Week 9 cramps - how normal?

Im 9 weeks pregnant n I've been having cramps since this morning, The cramps last around 2 hours, n stopped, n comes back again. It goes on like this for more than 12 hours until now. Is this normal? In week 7 I had same issue, ended with light spotting, went to gynae n they administered hormone injection n the cramps n spotting stopped I just had my week 9 scan few days ago, baby is having right size n right heartbeat. I'm just wondering if this type of cramps is normal