Skipped period worried

Hi guys,

I skipped my period for January and February. And it's extremely weird because I have never skipped one in my life. I am 33 , i recently did make a big move to another state beginning of January and maybe stress could be a factor. But two months? And yes I have unprotected sex with my current bf we use the pull out method . I have taken pregnancy these past weeks and nothing I honestly think I am not pregnant . I go see a doctor next week but kinda been worrying a lot lately what could possible be going on? Has anybody experience this before? This is my first time one more thing my period did change in 2021 my periods became lighter and shorter . Y'all think it could be pre menopause this early at 33???