How regular do i have to worry about being beaten by 1-outters

Was in a tourny today, was pretty early in the tourny and i was on a good run, was prolly up double the starting stack within 4-5 hands. Soon after i was dealt AQs, normally dont like aq and play very cautiously with it but figured i had over 150 bbs so i would play round. Any how short stack alled in with $400 and i called and villian then reshoved forcing me to call about 1200 more. Were certainly not the best odds but i was around 5k so i figured i would gamble see what happens.

to my delight short stack turn over pocket jacks and villian turned over AJ. i was happy with the side pot and didnt at all mind giving $400 away for $1200. wouldve still be a 800 profit, anyhow the flop came 2 7 9 rainbown, turn came 3 and the river cam a f****g jack. like seriously, how regularly does something like that occurs and of allllll the other cards to come a jack really and trully came?? i was totally bewildered. Would like to hear your thoughts guys

2.5% of the time I'm worried.

My most recent 1 outer defeat was a three player hand as well.

I had QQ in the big blind. EP opened, btn 3 bet, I 4 bet, call call.
Flop comes Qs7d8d . I checked, EP bets, btn calls, I raise, EP shoves, BTN calls, I call.

3 All ins on the flop,
I have top set, QdQc
EP has AcAs
BTN has AdQh

Turn comes ace of hearts and EP takes the pot.

is often the case, this will be your campaign
that is the only card arrives, it is poker