Not always. Sometime it could say positive, but that is all up to the type of preg test you took.
True, more saturated fats should be eaten. False, All types of fats are NOT healthy, trans fat is the most unhealthy. And all fats are not bad for you, you need some fat in your diet.
I may be wrong, but I think it's Antibodies.
True :) answers although may vary depending
Don't know if you typed this too fast spelt something wrong, so I'm not sure, sorry.