Hi, I m writing because I have a swollen bump right over the top of my tailbone where my back meets my crack (looks like a vein ), and it s been hurting for months now, but I don t like going to the doctor and being brushed off. The reason I m writing today is because when I got up this morning, it seems that last night this swollen vein basically popped. I don t know what to do or how I should treat it or even what is is. Can you shed some light on this please? I m female 29, 5 5 , 140 lbs. have had one child.