should i be worried?

i was at camp from july 20-august 15. while i was there i had my period from july 24-30. i then had some light spotting on the 8th and the 9th. it’s now august 26 and my period is a week late. i’ve had my period for almost three years now (i’m 14) and its always been regular. i’ve never had sex so obviously i’m not pregnant. should i be concerned/should i talk to my doctor?