if i flush the reste of the house with no water what so ever
Welcome to the forum! There is a lot of good advice to be had here, but you are going to have to provide more information in order for anyone to provide it. We sincerely appreciate complete sentences, with sufficient punctuation.
A few starting points... Municipal water supply or well? Type of pump; i.e. jet or submersible? Does your gauge indicate change in pressure? And feel free to provide additional information.