So since I was younger (about 9) I had a black pigment band on my nail (19 now) during my pregnancy (my dd is 16 months now) I noticed it spreading. Google tells me pregnancy can do that, or that I have melanoma. If it helps I am of darker skin and I’ve noticed in my family people have them quite commonly on their toes. Tbh I’m so scared I have melanoma and I’m going to die and not see my daughter grow up. I can’t sleep, can’t eat and withdrawn from my daily life. I’m going to go to the drs but that won’t be for a couple of weeks as I can’t get an appointment. I’m so scared