Yeah, me too...definitely worse when tired and mind is whirling in negative circles. Plus more likely to have privacy or be in the bathroom. Being tired is a major trigger for me as I am unable to handle the negative self image/shame/disappointment/guilt feelings that make me want to punish myself...
Good luck to you....try to remember it usually comes in waves...if you can distract or stay safe long enough, it will pass...
WB