Thank you ladies for your input, and the pats on the back :)
Wow, I must have been super hormonal on Friday.. or maybe just had the weekend to wind down about it. DS has been extremely healthy, everything since we found out we were expecting has been run-of-the-mill, normal, and no issues - I think that's why now that he's got something not quite right I'm totally freaking out...
Man, this whole medical stuff with your kid is hard!
I'm hoping too that we get some answers tomorrow.