5 weeks and crampy

Hey ladies! My hubby and I had been trying for 6 months and with the aid of Clomid got pregnant the first try. Hallelujah! I'm now 5 weeks and 3 days and occasionally I have light cramps. Almost like my period is going to come but then they go away. They come in waves. Is this pretty normal? Am I just super paranoid? This is my first pregnancy. Thanks!