Mirena and pregnancy

Hey guys, 
So I have had the mirena for nearly 7 months now.
I have all of a sudden over two weeks gained weight, have pimples, been feeling really sick, nausea and vomitting,  swallon legs and my period is 3 weeks late.. 
Has anyone else had this issue? I'm scared I'm pregnant. Have been to doctors and am waiting blood results. 
Wanting to know how many others have been through this !!