Back cramps in early pregnancy?

can you have bad cramping in your lower back and soreness in both the sides of your hips in early pregnancy like 4 weeks preggo? i had severs cramping all through the night in my lower stomach and noticed that i was passing a little gasbut the cramps dont feel like gas cramps but more like cramps before your period starts. now today i am cramping sooo bad in my lower back and my hips are so sore. is this normal?