I'm having severe cramps when moving around. I'm not far along. Only 4 weeks. Is this cause for concern?

Pelvic pain and discomfort is normal in preganancy, this is due to the changes the body is trying to adjust itself too. But sometimes pain is a red flag that something more serious is wrong. Keep monitering and if it gets unbearable, please do not wait it out. Head to the hospital right away. As the saying goes, better safe then sorry. Meanwhile enjoy the journey dear.