I need a reality check and for everyone to tell me I'm being ridiculous!!
DS is 8 weeks old. Born at 8lbs 7oz but lost 9% of his weight within 48 hours and his weight on discharge was 7lb 11oz.
He put weight on really well, got back to his birth weight pretty quickly and as a general rule has put on between 6-8 oz a week. He once put 10oz on in one week. He is between the 50th-75th centile lines.
He was weighed last Wednesday and his weight gain in that previous week had only been 3oz. I don't know if this is ok but I do know it's a lot lower than his normal gain.
This morning my mom came to visit us with a surprise present which was some baby scales??? I have absolutely no idea why she bought them!
She wanted to see DS on them so I felt like we had to indulge her so as not to appear ungrateful and the reading it gave says DS has lost weight. According to these scales my DS now weighs a whole Kilo less than he did 5 days ago 
Now my brain knows that a baby can't lose that much weight in such a short time (1 kilo=2.2lbs=32oz) but I'm still feeling edgy due to his previous reduced weight gain.
My DH has told me 100 times that the baby scales are wrong - but can they be? Surely when designed to weigh babies, for which accurate readings are necessary for lots of reasons, can they really be wrong by a whole kilogram??