I have been self cathing for almost 14 years. Other than the ocassionsl uti... No problems. I had a surgery recently that required me to wear a Foley catheter. I removed it Friday... Cathed as usual Friday, Saturday, and Sunday. Sunday night I could not get urine while sitting on the toilet. I layed in the bed and was able to get urine. Today is Wednesday and I still can't Cath while sitting on the toilet, only laying down. While attempting from the toilet position, there is blood on the catheter.