Pain on left side

An
My miscarriage started naturally 3 days ago at 7wks along and before my first appointment.  The baby was actually the first to come out.  I had a transvaginal ultrasound to confirm and was also checked for ectopic.  The doctor said I had some tissue and 12mm blood, and that I'd be fine to continue naturally.
The cramps have been intense and the bleeding moderate, but nothing too bad.  Then this morning, before I even got out of bed, the pain in my lower left side - just inside and below my hip bone - was severe.  It's been two hours now and it hasn't let up.  I can feel the pain radiate all the way down the top of my left thigh. Can this be normal? It comes in waves but doesn't go away even in a lull.