Day 9 post-op

I have been lightheaded since yesterday. Almost passed out one time yesterday! Being at home with three kids, that was scary. I checked my BP and it was 95/65, very low. So I called my doctor's office this morning because I am still lightheaded. They said it is because I am dehydrated! I believe it because I have been having a hard time getting the 40ozs. in, but have been very close everyday. So, now I have to try to drink as much as I can today and if it doesn't get better then I will hav to be admitted to the hospital to get fluids. I am doing nothing, but drinking all day. So far I feel the same.