Worried?

Okay so this might be long ahaha, anyway on Tuesday, I have to swim for school and it's going to last about 3 weeks. I'm Muslim so I have to wear something that covers my body. I'm not ashamed of my religion or my hijab at all. I also don't care what people think about me but, there is a a little part of me that is worried about what people will say. Again, not shamed of my religion. Also, the bathing suit I will be wearing is an Islamic Swimsuit. Any way I can't stop the worrying? I know there will be racist people that I meet along the way in life and it's bothering me that I'm a little anxious on what people say.