US and issues

Well, I was going to write last night.  Had our first US yesterday...twins with heartbeats of 150 and 162 beats per minute.  I was on could nine yesterday.  When I got home from work I was walking in the door and had a sudden gush of fluid and then started spotting.  I was so worried that everyting was going wrong.  I basically stayed in bed all evening/night though I didn't sleep much.  I spoke with the RE nurse and went in for another US this morning.  Thank GOD the babies still looked very good with good heartbeats.  I had a new small fluid collection outside of the 2 baby sacs.  My RE thinks it is some fluid from my pelvis communicating via the fallopian tubes.  My sister-in-law has a very good friend who is 30 weeks along who had the exact same thing happen and all has gone well.
I'm feeling much better but wish I could totally relax.  Thankfully today was a light day at work and my partner was more than willing to cover a few things for me.  So I'm at home, resting, napping, and trying to relax.  My RE said there is nothing I can do to upset things as things are so well implanted at this point.  It is reassuring but I guess I'm a worry wart. ;-)