Bad news

Well I got my first ultrasound this morning.  I am only 5 weeks but my RE took me.  Right now there is nothing in the sac.  This could be normal because it is so early.  Also, there is a bleed attached to the sac.  I don't completely understand this but I am at a higher risk for a miscarriage.  There is still hope, but I am on bedrest today.  I just hope if I do miscarry it won't be that bad.  This is our miracle rainbow baby, I just don't understand.  I am going for another ultrasound on Monday.  Why is it so hard to have a living baby?  I am almost ready to give up.