I NEED HELP SO FAST IM SO SCARED

so I'm a 14 year old girl who has just started using tampons about 2 hours ago , I went to the toilet and done a a pee for the first time with a tampon in ! And it stung my vagina when I peed ! I have no clue what's going on I have asked my ppt friend ps at school if they have ever experienced this but they all said no I have no idea why it's happening to you !!!! Please help ladies