Cramping while 4 -5 weeks pregnant?

Jana • Fri, Aug 28 2015 • Married to my best friend!! Pregnant, ftm, to a sweet baby boy due in April

So I'm 4 1/2 -5 weeks pregnant. Dr confirmed blood and urine test Monday! Very excited! But I'm been having cramping on and off like my period cramps is this normal? Thanks 😊