Do I have melanoma.. how likely is it that this is melanoma?

Do I definitely have melanoma? How likely is it that it’s melanoma?
I’ve read about the ABCDEs of melanoma and I think all of them apply to my case. My mole used to be just a tiny dot but then it suddenly became raised and grew larger in size. It also became asymmetric, and the borders are irregular. It’s now about 4-5 mm in diameter. It doesn’t itch, hurt, or bleed. I’m a 23 year old female and I have a family history of cancer on both sides. My aunt has breast cancer and my grandfather used to have stomach cancer before he passed away. I’m incredibly worried and I have to wait till next Thursday to get it examined. Please advise, thank you.