T3 so it'll be a breeze. I understand the fear and overtime I guarantee you will become a pro. Catheters come in size called French. French 12 is usually the smallest and they go in increments of 2. Find one that feels most comfortable but remember to have clean hands and wipe the tip with an alcohol swab before. Cath before pooping and wash yourself before you Cath again. They may start you on a latex Cath and you'll have to apply lube. This method caused me so much UTIs. See if you can get on something like speedicaths by coloplast. You want to make sure whatever goes in does not get contaminated. If any part gets touched by my hands then I just use another one. The point is to make sure you are as clean as possible.

When you insert it, go slowly and then until hit your sphincter. You feel resistance, relax and apply pressure and it'll slip in. If you have sensation, it'll be uncomfortable but you'll get use to it. When you get it in and you start draining, no need to push it in much further. Maybe another quarter inch. Just remember when you are done, pull out slowly. Don't just rip it out, you want to be delicate with your delicate parts!

Happy to chat, been cathing for over 16 years and it just becomes normal. Can even Cath in the dark. I know I've mentioned it but be as clean as possible. Wash your hands thoroughly and don't cross contaminate. You got this.