I usually weigh myself right in the morning when after going to the loo when i wake up. I also take my measurements on my waist.

Usually the morning is the most accurate time to weigh yourself. because dinner time weighing includes the water and food inside ur tummy unprocessed wadsoever....

and i do agree that whenever i go to the doctor, my weight will add 5 kg to my weight at home. I heard from a teacher during secondary school, that it could be different kinds of floorings that the scales sit on.....maybe we can weigh lesser on marble or concrete floor. yet on wooden floorings, we have another new weight.

*shrugs*

P.S. Why not ask your boyfriend to weigh in the morning too?