Is it bad that people are saying I look skinny?

SmileGirl95
Since November 2012, I've lost about a stone and a half. I'm 5'1, and still a little overweight at 134lbs but I used to be 158lbs which just reached the obese range. Recently people have been noticing the weight loss. Today at school, some girls noticed and they were saying I looked nice. Then later on, one of them asked me how much I'd lost and when I said a stone and a half she was shocked and she said something like 'make sure you don't get ill' even though she's taller and slimmer than me, but in a nice way.

And today my sister came home from Uni and when she saw me one of the first things she said was 'You've lost weight, you look tiny' (again she's slimmer and taller than me) and was complimenting me even though she saw me only a few weeks ago. Then later on she was saying how my eyes look baggier because I've lost weight and that I look 'skinny ill'. It's strange because my weight and measurements (27 waist, 39.5 hips) are actually a little big for someone my height. I know they're being nice, but I kind of worry that if I lose more then I will end up looking ill and weird. Is this bad?
Updates
+1 y
Sorry I mean November 2011, I just realized I got the year wrong! :)
Is it bad that people are saying I look skinny?
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