Please Help!!!

Hi moms and moms to be... I’m 16weeks pregnant and experiencing very heavy bright red bleeding with no cramps... when I noticed the blood last night I went to straight to a&e...; they did an ultrasound and I saw my baby heard the heart beat and watched movement... the ultrasound tech said my placenta was normal and in place my cervix was normal and my OS is closed... but I’m still bleeding like it’s no body business... I filled a pad... just put on a new one... my obgyn isn’t open until tomorrow morning and it makes no sense going back to the hospital because they didn’t see a problem... Has anyone experienced this? Please help me I am terrified