Bleeding during late pregnancy

Gemma
Has anyone else had any bleeding during their pregnancy? I am 34+ weeks and have been losing blood for the last two weeks.
I have been admitted to hospital and had examinations and 2 ultrasound scans but all seems fine and doctors cannot tell me why I'm bleeding. 
It's a small amount of brown blood but sometimes there are a few clots. And I seem to lose a small amount everyday.  This is my second pregnancy and I have never experienced anything like this during my first.
Has anyone else had this problem as I'm a little worried? ❤️