Any medical-type jellies- can you tell me about this bruising?

That’s exactly what bruising is, broken capillaries. Age, thinning skin can cause more bruising. Excessive exposure to the sun makes them worse. I bruise more easily now that Im older. If you have no known underlying medical probs, you’ll be fine. The body will absorb the leaked blood.

Sounds normal to me to have a bunch of bruising after a fall. Depending where and how you hit yourself you could get a lot of bleeding (I don’t mean bleeding outside, but bleeding under the skin which results in a bruise). If it has already turned to yellow it sounds like you are healing just fine.

Next time put ice on it immediately and it will minimize the bruising. I read it somewhere once and when I had a heavy fan fall and scrape my thigh it immediately started to bruise and swell. I put ice on it and found I had little bruising from the event and it healed faster.
The ice will slow the blood flow from the broken vessels and keep it from expanding and making it look larger and it will reduce swelling.
Read this link on how to get rid of a bruise and it also tells you when you should be concerned.