spot on labia majora

Hello all, yesterday I went in to the dermatologist to get a cyst removed on my underwear line.... the Dermatologist noticed what I have always thought was a birthmark on my labia majora and she thought we should biopsy it..... WHAT!!!! I was completely shocked because its never bothered me.. I've never pointed it out to any other doctor but its always been there. They told me it takes 2-3 weeks to hear back and I left the clinic crying about it. I have not stopped googling or thinking about it since. I have had it for atleast 10-12 years and before that possibly but I dont remember. IM FREAKING OUT!!!!!!!!! I am convinced I have skin cancer now or vulvar cancer and am going to die and leave my 4 kids. IM SCARED AS HECK! Has anyone else had anything similar? Anyone willing to calm my a** down!!!!!!!!!! PLEASE!