It's not nice to ever feel worried about something.
If you are worried then please talk to an adult you trust about it either at home or at school.
If you feel you can't talk to someone at home, you could also think about contacting Childline.
Childline are there to support children when you have a real worry.
You can contact them by phone or online.
Watch the video below and then you can visit the childline website for help by clicking here.