If a mole hasnt evolved or changed in 2 weeks, is it a safe bet that it isnt cancerous? ive also had the same mole for multiple years, and the general shape is the same, i just noticed it seems a little darker. but it hasnt changed in 2 weeks?

There are specific signs and symptoms which are more predictive than two weeks history....or two years history. The Skin Cancer Foundation talks about these https://www.skincancer.org/skin-cancer-information/melanoma/melanoma-causes-and-risk-factors/ Meanwhile, bring your mole to your primary care physician's attention and let s/he be aware this is a concern for you.