I am new here by the way. Probably too much information!!
So today I took my two DDs ( 4 & 3) to one of those trampoline parks. It was SO much fun.
I'm slightly on the verge of being overweight
and as soon as we got there we were all bouncing around like crazy. I was sweating like mad, as were we all.
Anyway, after around 60 minutes of jumping and running around, took DDs to the toilet and I noticed I was let's say... Slightly damp?? downstairs 
I then realised I had pissed my pants. It must have been happening whilst I was jumping and I can NOT believe I was unaware that it was happening.
Also what in the world is happening to me! I have never had a weak bladder or anything and my youngest just turned three so surely things have strengthened downstairs 
I am so embarrassed and confused and feel like a child.
Apologies if I should have posted somewhere else...
I suppose my BU part is that I was jumping around with pissy pants totally oblivious. Or maybe that I am 25 and can't control my pee ???