Sorry to hear about your troubles. Bleeding inside the eyes is understandably very upsetting and have had many patients come with sudden bleeding. Let me try to detail what you can expect to happen in the next few days to weeks.
First, where did the blood come from? Complications from diabetes is the most common. Blood press that is really high can cause bleeding as well.
A third entity, which I think is happening with you is called a hemorrhagic posterior vitreous
detachment. Let me explain. You have a thick gel material within your eye. As you age, the gel material becomes watery (like jello left outside). The gel pulls away from the walls of the eyeball and sometimes can pull a blood vessel with it, causing the blood.
The blood will go away. It is not the problem. What we need to make sure is that the retina behind all the blood is still OK. If the bleeding is mild, then your ophthalmologist is able to look with a bright light and confirm that the retina is attached and doing OK. If he cannot see, then he can do an ultrasound
of the eyeball to check for a retinal detachment
The key for you is that you need frequent followup. You are recommended to sleep with you head in a 45 degree position to allow the blood to settle to the bottom of the eye. You should have a repeat appointment in about 1 week. (A retina surgeon preferably or general ophthalmologist).
If the blood never clears, then we could consider surgery to remove it then look at the retina at the time of surgery. Usually we think about this 4-6 weeks after the initial bleeding.
So, it is important for you to talk to the ophthalmologist to find out who you need to see. My recommendation is a retina surgeon.
I'm happy to answer any more questions you may have.