what are the other signs of misscarriage?

Hello,

Welcome to ehealthforum andthanks for writing us

Decidual bleeding is shedding of the uterine lining during early pregnancy.Though it is somewhat similar to menstrual bleeding but since it is associated with cramps it might be suggestive of even miscarriage.Some other symptoms which may or may not be present in miscarriage are back pain with severe cramps,brown or bright red bleeding,passage of clots.
I would recomend you to get HCG level(hormone)estimation done which rises during pregnancy but in miscarriage it declines gradually and also a USG scan would help in knowing the status of pregnancy.
A pelvic examination would further help in diagnosis.It is difficult to give exact diagnosis without evaluation.Kindly visit your Gynaecologist earliest for evaluation.
Take care!