I think Trix forgot she's housebroken..

She went twice on the carpet today... and both when I was just getting ready to take her out..

I think she might have done the second one because she saw me cleaning up a spot on the carpet where I spilled some tomato soup (don't ask, I'm clumsy =) ) and thought 'This looks like a good place to go.. '

She's also kinda under the weather..

Does that happen when dogs are not feeling well?

Yep it might be because shes not feeling well if she keeps it up I'd take her to the vet she may have an UTI... Good luck!!

Is it really cold outside? Sometimes small dogs decide it's too cold and mess in the house.

Well, right now it's -15 without the windchill.. which is uhmm.. 5 degrees Fahrenheit..