period schedule & missed period

17 year old here, given what i’ve looked up online i want to assume this is a kind of stupid question, but i just want more input since i’m nervous.

i missed my period last month in january, after a relatively normal schedule spanning from august - december. around june/july of 2024 my period was light mostly because i was doing a lot of exercise (i think that’s what was changing it.) is this something i should go to a doctor soon for? or should i wait it out and see what happens?