Inappropriate Eliminating

At the end of June I went backpacking through Europe for three weeks. I currently live with my mom so she just took over care of my cats while I was away. My mom messaged me during my travels that my female cat, age 9, slightly over weight but in good health, and fixed, had started eliminating outside her litter box. I assumed that my mom was not keeping the litter box clean enough while I was away. Not everyone loves the task of cleaning cat waste. I arrived home to a clean litter box and poop on the floor. I've looked up information on why she could be doing this and it could be medical or stress and from the timing of the elimination it seems like stress. I thought we had finally turned a corner when two days ago I woke up and there was no poop on the floor, but upon return from a doctor's appointment two hours late there it was. It was the first day time elimination. The situation is about to get more stressful, I'm getting ready to move. I'm scheduling an appointment with the vet to have her checked out for any medical reasons for this elimination problem and as long as that turns out good I can start trying to figure out more behaviour reasons why she might be doing this. The question is I don't know what to do with the big move coming up. I'm moving into my first house with my boyfriend and I don't want this to be a problem for any of us.

Hi TheAntler and welcome to TCS..   I'm sorry it's taken so long to get to you.. sometimes we're just very busy.

Cross each bridge as you come to it.. get her checked by the vet for a UTI.. It's not nice but it is an answer.

We also have a very comprehensive article on this.. have a look through it as well.

When are you moving?

We move August 21st. We've already figured out where to place to litter boxes in the new house. Just trying to figure out where to put the third. I'm just worried this will be too much stress on her and she'll never go in the box again.

Today I found a wet spot on the carpet where she urinated. The fact that I'm in the middle of packing and getting ready to move makes me feel helpless to do anything.