Early Pregnancy!

I did this same thing when I was Pregnant with my First... I got a Postive test with my Son who is 5 Months old now, & During the First Weeks my Legs would Cramp like crazy, & I always thought that I was about to Start my Period! So I was Worried in the Beginning! But I was Pregnant, Now he is 5 Months old. But I am 12 Days late and Got a Faint Line at 9 Days late! And I am Having Leg Cramps! And I'm nervous again! I never get Stomach cramps. Only Leg cramps! So that is why I'm Worried... How Common is it to have Period Leg cramps While Pregnant?