Peeing during fingering?

Going anon for this because it’s kinda embarrassing.

So . . .

Tha last time my bf was fingering me I peed a li’l bit. I thought it was squirting during but after it looked/smelt like pee. This also happened when I fingered myself while masterbating (but not from dick tho).

WTF is it and how do I make it stop?? Pls help!