My puppy is about six and a half months
She is allways trying to hump my other boy dog, its like she thinks she is the boy. Anyway she hasn't been in heat yet that I know of, there is no sign of blood anywhere, but she is starting to slow down her ating habbits, she won't eat unless you sit besie her and coach her. Also her stool is runny, and she is peeing more than she normally does. Everything else is normal though, she plays like she allways has and she is allways smilling and happy. She threw up once yesterday though. So my question is, is she pregnant or what? All comments and suggestions are appreciated.

If her stool is runny and she has been throwing up it is time to take her to the vet to make sure she does not have anything like parvo.

As far as her humping your boy dog, it is my experience that this is a form of trying to tell him that she is the alpha dog. Her humping him will not get her pregnant. Him humping her will.