My scale must be broken

So I asked for a scale for Christmas. (weird request, I know) Anyway, I hadn't used it much, but a couple weeks ago I decided to satisfy my curiosity. BAD IDEA. I found that I had gained a horrifying 14 pounds (Can you say gross? Say it with me, GROSS!) since I've been married. This isn't the good "my muscles are getting stronger weight" either since I'm pretty sure I can feel my arms jiggle sometimes while I'm working - gross again. With that awful number nagging me, I decided to start trying to work out at home and eat better. And I'll tell you, working out without a gym is hard to do!
So if you can imagine, I've been trying every other day to jog/run in place for about 30 minutes and then do various exercises for the next 30 minutes all while watching entertaining tv shows. Now, I'm not really used to having an exercise routine other than what we'd do for conditioning during cheer practices. So the first day I basically tried to do everything I could think of in the same amounts as I did when I was cheering and tumbling (AKA in-shape). Needless to say I felt like passing out right after and pretty much couldn't move the next day. I woke up one morning and nearly fell over trying to straighten my legs and then Matt asked me why I was walking like a penguin.