That was what my period was like the cycle before I got my girl!!
Estrogen is what makes the lining grow so you'd always have something to shed. What can happen is that if your body is just asleep at the wheel basically, LOL, it doesn't really grow much of a lining. Then when your estrogen drops even lower, it can cause the lining (what there was of it) to slough off. But the good news is that it is still a hormonal reset.