Weird mole on my arm, scared its skin cancer..

I never used to be a freak about my health. never had anxiety. but at the start of last summer I got freaked out about everything different on my body and thought it was all going to kill me lol. it used to be fears of alot of randome thinngs. now its just moles and lymphnodes for whatever reason. this mole is small, not a solid color, it gets lighter at one spot, and it is flat and for the most part dark. I asked my dermatoligest about it and she said it was a sunspot. she didnt use any tools to look at it... not even a light. I think shes ingnoring it since im young. im only 16 and have no family history of skin cancer so I should have a low risk of getting it. I feel like it changes too. for the past couple of days it had this little black spot in it, then I looked at it today and its completly gone... the whole mole is lighter aswell. why did this happen? is used to be dark! now its a light brown and I feel like im going crazy. I doubt its skin cancer but this stupid anxiety makes me keep thinking about thw "what if". I need to get over this anxiety. im failing school now because im focused on this more than that (even though I hate school). idk what to do so I came here as a last resort. since im failing school, my mom sold my car (think thats a bit overboard) and im fighting with my parents constantly. I need to get rid of my anxiety... and buy a new car lmao

Hi,

I have the exact same worry with a mole on my arm... It is darker than all my other miles, is irregular and itches sad

So scared its cancer as I have had lots of unprotected sun exposure.

Anyways just wasted u to know you're not alone

Kelly x

Ps sorry for the predictive text typos

*moles

*wanted

Yeah I had alot of typos too because it has no autocorrect haha. but dont worry, odds are its not cancer. go online and look up places to get free skin cancer screenings. im not sure if you live in the US but they have these free skin cancer screenings literally ALL OVER the country. how old are you btw? Good Luck and keep me up to date if ya want