how is this possible?

I've been losing inches and gaining some weight... I don't work out, I have a job that requires me to move a lot but isn't hard labor.

I eat about 2 meals a day with maybe a snack, I know I'm right around 2000 calories... and I can't think of anything else to add that may help.

So am I about to gain a bunch of inches? What do I expect? Is it something to worry about? I went from a size 16 back to a size 12 and I'm hoping to get back to a 10 but with everything said I don't think it's likely to happen any time soon.

Please don't get after me for not working out, I've had a slipped disk in the past and too much bending and what not will throw my back out I'll be out for a week. And please forgive me for being a health "dunce" I just don't know.