What Causes Pain In Stomach After Having Non Hormonal Birth Control?

well i have the non hormonal birth control that is the 10 year one! laast month

i had no period and today i have been having pain like bad cramping that comes

and goes and is through out my belly almost they way labor pains do! i am weak

and very tired and i have been felling a little sick to my stomach! just worried

what might be wrong with me