2 year old Rottweiler

Question
I have a 2 year old rottweiler named Zeus and he has been throwing up every now and then, mostly after he gets up. I have two younger sisters and one younger brother and we were all sick with a some kind of virus. My dad said that Zeus probably got it from one of us. But he's been kind of sluggish and he will eat, but not a whole lot. I have seen him urinate, but I haven't seen him poop. My dad and I are taking him to the vet tomorrow. This has been going on for 7 days and I'm worried about him a lot and I was wondering could he have possibly gotten parvo? or maybe have eaten chocolate? Please help me. I'm only 16 and if I had a way I would've taken him to the vet right away.

Answer
Seven days is too long for him to be sick. But it doesn't sound like parvo at all.  It doesn't sound terribly serious, could it be that he ate a sock or some other thing that could be causing a blockage.
That's way too long to go without pooping.
I know you're doing the best you can MaeCee.
Let me know how he does
Cindi