SUPER embarassed

Hi everyone,

This is so embarrassing and shameful that it's hard to even talk about anonymously... but I'll get right to it. I was visiting my brother (22) at his place a little while ago and we were going to go out with some of his friends (for the record I'm 23). We had a great night out with everyone and when we got back to his place he said I could have his bed while the guys and him crashed on the couches (nice I know). So all was well until I woke up and realized... I had peed the bed. Now i have a pretty serious overactive bladder issue which I take medicine for, but when I drink and therefore don't wake up as easily, I risk this happening (on a regular day I get up 3 times a night to pee). so anyway i PANICKED, but he is in an apartment so I couldn't secretly wash the sheets (no idea where the washers are) and there was no change of sheets. In the end it dried totally clear and there was no smell, so i decided on telling him i spilt some product on his bed and that it's not good for fabric so he should wash it, he said sure no problem. I talked to him the next day and it turned out he never washed it, he said "there was nothing there so whatever." I was SO SO upset, i felt HORRIBLE. i would never want him to sleep there of course, but at that point he had and I was just mortified. So here I am, it has already happened and believe me I wish i had handled it differently had i known what would happen. I love my brother, so please please know I feel terrible. At this point.. do I fess up or try to live with the lie? This may seem silly to everyone but it's eating me up inside since I'm a very honest person... this was just SO embarrassing so I panicked.

I appreciate any feedback on whether to fess up or not.... thanks