I have a 2 year old female cat who began urinating on my bed about 4 months ago and on our couch about 3 months ago. She only ever did this when she went into heat so we had her checked out by a vet and he couldn't find anything wrong with her and assumed it was a marking issue from when she went into heat. We had he spayed a little over a month ago and everything seemed to be getting better the vet took a look at her bladder when he did the spay and said everything seems to be okay with her bladder. it was about 2 weeks ago she urinated on the bed and again today I have sprayed the sheets and the bed with 2 different odor removing sprays but neither seems to have be working. we have 2 other cats who have not been urinating on the bed. I was wondering if anyone out there has any ideas on why this keeps happening or ideas on getting it to stop. (Side Note) She keeps urinating on my side of the bed and I have had some health issues over the past couple of years and my doctor has been unable to find anything wrong and I started to wonder if she could be reacting to some scent I'm leaving behind in my spot I asked a vet and a doctor about this and they both said that it was unlikely but I was wondering what you think.