Open cervix in pregnancy

Ruhena • I thank God everyday for my beautiful family ❤️
I am seven weeks pregnant around 19.30 yesterday evening I started bleeding heavily with some clotting. The doctors said my cervix is slightly open but she can't see any product and my cervix are high. They have kept me in hospital over night so I can have a scan tomorrow morning to see if I have miscarriaged. Does anyone know what a small opening of the cervix means and the cervix are high and has anyone had similar experience.