Vulva Cancer Symptoms

Hi everyone,

I'm looking for some advice, and maybe about to disclose TMI but Dr Google gives so much conflicting advice and I'm at my wits end! 

I've a small pea size lump in my vulva, it's sort of soft/squishy on top but hard under the skin. Its smooth to touch and it's got no head as if it were a spot to pop it, believe me I've tried, I once squeezed so hard it looked like it was white in it and a tinge of blood but it's went away again! I've had it for about 3 weeks that I've known about, sorta came across it by accident. It doesn't hurt, its not itchy, not causing me any bother apart from destroying my mental health. I went to the doctor about it a few days after finding it ans she said oh it doesn't look sinister, maybe a blocked duct or something. That was it sent me on my way. Obviously I'm not convinced or I wouldn't be writing this post, I'm worrying myself sick.  It doesn't seem to match any of the cyst posts I see on Google so I'm looking to understand the symptoms of vulva cancer and make another appointment with my GP to push it further. I really would want rid of it no matter what. I've tried to get a private appointment with a gynaecologist but looking at the end of April so it feels a million years away.

Any help/advice/words of calm would be appreciated.

Many thanks

B