Time to get my own scale

I weighed myself this morning with my room mates scale. 92 lbs. That's 4 fucking pounds that I've gained. Disgusting. Today was also the first day in weeks that I didn't count calories. Feel so fat and gross. Back to the weight thing- I went to a fair (the reason i didn't count calories; its so hard and gross). While I was at the fair, I stepped on a scale- 80lbs. Which scale is right? I wish it were the 80 lb one, but I really don't know. How do I figure it out? I can't use a doctor's scale. I suppose I could get my own scale. But I don't even know where too hide it. Its driving me crazy! How much do I weigh? I wanna be smaller. 80 would be so amazing and so much closer to 60. I so hate feeling huge!