freckle on foot

hi everyone. firstly I am not trying to get a “diagnosis” on line. I have an appointment on Monday with my dermatologist. I do yearly skin exams as I have several freckles and moles and nothing has ever looked abnormal. This mole has been on the bottom of my foot for 6-7 years but a few days ago my friend told me it looked like melanoma when she saw my feet propped up and I am a hypochondriac so I am looking for others OPINIONS while I wait til my appointment Monday. I am 5 months pregnant w my second and terrified of anything taking me away from my kids