Congratulations on your pregnancy! I am sure you will get more responses from some extremely knowledgable people on this site, but at my first ultrasound I was told I had a cyst on my ovary, but it is my understanding that this was the corpus luteum, which is where your egg originated from, and sustains the egg till implantation (maybe google it for the correct medical explanation). From memory, it can also cause some pain. It then disappears over time. My cyst hasn't been raised again in any of my subsequent ultrasounds so I am assuming that's what it was.
I'm sorry but can't comment on the haemorrhage as I have no experience there but wish you luck.