Well we were still keeping them to 8 weeks, but we always took pups for first shots at 6 then i think it was 8 or 9, and I really hope its not parvo, she seems very fine and playful still and eats. she got out of the box this morning and I found her follwoing me and maybe she just ate something that made her upset even though we dont have to much stuff for her to get into, and I didnt know if its because they eat hard food now and she got into the older dogs food this morning maybe, or if its frm switching puppy food.