Warning: only for boys. when you are in puberty what is an "arrection? "

It's called and "erection" and it is normal. It is when the blood flows to the penis because of hormones. It can come from arousal or unexpectedly, since during puberty your hormones are changing and there is a lot of change happening in the body.

Exactly, it's one of those things that happen when you first start puberty my friend.

10/10 recommend bring pads/tampons with you no matter what. im 16 & i’ve had mine since i was 12 and they’re still it regular, but id suggest using the glow app, many women use it for fertility reasons but i use mine specifically for the period tracking portion and it guesses when your next period will most likely be for the next two months. i dont believe theres any way to delay your period, so id say hope for the best but make sure to bring all of your stuff just incase. have a good cruise!