Hi kevin i would suggest that you pee n your bottle. my friend also recently had this situation yesterday and he chose to empty out my water bottle and run it by my area and peed into it. It wasn't as nice because some urine went into the seat but it was sufficient. I threw the bottle away after.

There are other options too. For example, hold it in. Its not very effective, especially for a woman.

And the other disgusting one, just go. Its a terrible feeling, but at least you went.