I recently found my digital bathroom scale after moving in December, and I weighed myself, it said something like 267.5, it said this 3 times, then I weighed myself again about 5 minutes later and it said 292, then I weighed myself the next morning and it said 287.5, My boyfriend said he pressed on the corner of the scale then let go and it kept saying 30lbs even though there was nothing on it after he pressed and let go, he says this means my scale is probabaly off by about 30lbs, could this be? If so, how do I fix it, or do I need a new one? I'd really like to know how much I really weigh lol 267.5 is alot better than 292