23 years old. I received oral from a girl who I don't know her intimate history, after protection was used. I have noticed a bb size ball except near the tip of my penis inside urethra, or so it feels like it is. Noticed slight irritation when urinating. Also my urine has had a somewhat foul smell. A little itchy at the very tip at times but that has gone away. No noticeable discharge. Ejaculation has been fine. I'd say I first noticed the bb roughly a week ago. I will be going to get tested for any stds just in case but I wanted to see if anyone might have any ideas as to what it could be?