Amy is using my clothes as a toilet.

So earlier in June Amy our Siamese got sick all over one of my suits. We took her to the vet and he said there wasn't anything really wrong with her, but that he would give us some pills to calm her stomach down a little. Well all was fine until this morning, when I found she had used yet another set of dress clothes (the ones I planned to wear to work today) as her own personal bathroom. The door to our room is never closed so she can come and go as she pleases. I just don't know why she is doing this if the vet says she is fine... it's costly to keep fixing suits and we don't really have much money, meaning I can't keep taking her to the vet because it's a $90 fee for an appointment, plus any money on top of that (pills). I don't know what to do, vet trips are costly, but so are my work clothes and as is our kitties health.

For me i would be taking Amy to see another vet for a second opinion. Did he say what was wrong with her stomach to calm it down?.

The vet said that it seemed like stress would be causing that (an old room mate had just moved out) But she seemed to get over it and has been extra happy with the attention she gets now (not to mention sleeping on my pillow with me) So I just don't think that could be it

Did your vet check for a UTI? My cats are faithful to their litter boxes unless they get a UTI. I have one that is prone to urinary crystals and this is her way of letting me know that she is having issues. Also, check they food you are giving her, I had a cat that ate the same food for years and then started having problems keeping it down. Turns out they changed the formula and added salmon. She couldn't keep it down and would throw up on my bed and clothes etc. She was trying to tell me, but I was being dense lol. If she keeps it up you need to get a second opinion from a new vet. May cost some for the vet, but cheaper in the end.

Some questions. . .
How often do you clean the litterbox? Is she your only cat? Has she been checked for a UTI (Urinary tract infection)?
I agree it might be worth it to get a second opinion. Vets are very capable (usually), but different ideas and points of view can often help.

Is she peeing on your clothes or is it diarrhea or poop? You said she 'got sick' but is using it as a toilet, so I'm assuming this is diarrhea?

If it's urine, it could be a UTI which the vet should check for. Also, is she spayed? Did you clean where she peed with an enzyme cleaner? (You must do this or she will go in the same spot if it's a behavioral thing). If it's truly behavioral, I would try putting a feliway diffuser in the room where your clothes are. They are kind of expensive but they work for behavioral peeing.

If it's diarrhea, have you switched her dry food recently? Switching dry food can be very hard on a cat's stomach and all changes must be gradual over the course of a week. Whatever the cause of the diarrhea, buy some canned pumpkin (not pumpkin pie filling), it will help.

How many litter boxes do you have and how often are they cleaned? Some cats like to have 1 box to pee in and 1 to poop in. The litter boxes should be uncovered and cleaned daily. (You wouldn't want to use a smelly outhouse would you?)

Amy is one of two cats, she and Cate have lived together for all of amy's life. We clean the litter pretty much every other day if not daily... they are very regular cats.

And yes it is diarrhea, she is spayed and we did clean everything up using cleaners then washed all the clothes several times over.

She has been on the same dry food for quite some time now, and when all the problems started we were about 3/4 of the way through this current bag of food.

We have one very large box for the two of our cats, which has worked just fine for them since Amy was born (over 3 years ago).