u/s next week

I have my 20 week ultrasound scheduled next Thursday to check for any defects and to find out the gender.  I am starting to get really nervous again.  I am hoping that all is well with the baby.  I wish I could stop worrying, but it is really hard not to.  I haven't felt a lot of movement yet, just a little here and there, which worries me.  I am sure it will be ok, though. I am really enjoying the summer, but not accomplishing much at work.  I was hoping to get a lot done this summer in terms of research and writing, but I find myself constantly sucked into doing baby stuff.  My newest craze is trying to find out what type of cloth diapers to use.  There are lots of funny (and expensive) options.  I am pretty sure I want to use cloth, because I care about the environment.  Of course, I have no idea what I am doing on this one -- so I checked out lots of websites -- all with great names (fuzzibuns, bumkins. . . ).  Who knew?  It is all so much fun, but I have held off on buying anything (furniture, diaper kits, etc) until after the u/s next week.