Woke up bleeding

I woke up this morning with brown blood, much more than just spotting.

I went to the ER and they did every test imaginable. During my PAP they said my cervix is closed but that's where the blood is coming from. HOWEVER my HCG more than doubled from Tuesday and the ultrasound showed the gestational sac and yolk sac - I'm only 5 weeks and 4 days so they said that was normal and exactly what they hoped to see.

They were very positive about it all and although all my levels were normal I was given progesterone to take. Also no working out, no running (I'm very active so that'll be hard!), no heavy lifting and no sex.

Has anyone been through something similar with a positive outcome? I'm very happy that everything looked good other than the bleeding but still a little anxious. Need some positive stories!