Did they tell you how big the bruise was mismylinford? And where it was? Just helps to gauge how likely it is that you will see more bleeding.
I had a moderate sch at 11+6 that was 5.5x5.7x3cm when I hemorrhaged and easily as big as the baby.
I bled (initially red but then brown) for over 5 weeks because it was sizeable and located above the cervix.
It was distressing to be bleeding for so long into my second trimester, but by 17 weeks the bleeding finally stopped.
I am 27 weeks today and at the last scan (24 weeks) the sch was still there, but was a little smaller and inactive.
Statistically, these things do tend to resolve themselves although there are a few sad outcomes.... Most bleed out or are absorbed by the body by about 20 weeks. Mine didn't disappear (possibly due to size), but it did stop actively bleeding.
In my case, I was on bed rest during the active bleeding and experienced a lot of pain and cramping. However, many doctors will just tell you to carry on and just take it easy.
I also drank loads of water to reduce the cramping.
There are some support groups you can join if you want to speak to others currently going through this.
I am on a Baby and Bump SCH group, but I think there is also a Babycentre one...
Best wishes.