Lump/wart/pimple thing

Hi all, I actually don't know how to describe this other than its a lump it looks like a wart.....hoping someone has experienced something similar or looked similar - i've googled and searched all previous topics but can't quite see a pic that looks like this.  Noticed it a few weeks ago and at first it was black, looked scabby like she'd hurt herself somehow and didn't think much of it until i notice it just wasn't going away.  Took her to the vet who pierced it with a needle to see if she could see anything nasty and wasn't too concerned, said to put cortisone cream on it and give it a week.  So i do that but Cherry just licks at the cream and have resorted to putting a sock on her to stop it which kind of worked.  It now no longer looks black but more like a clear blister type thing - no idea.  Sent the photo to the vet and she again didn't seem to worried about it but getting it removed and sent off for pathology in a couple of weeks.  Cherry is not bothered by it at all but now i'm super stressed....pic now attached

This should help
https://staffy-bull-terrier.niceboard.com/t68009-new-how-to-post-photos-on-the-forum

Our babies do come up with lumps & bumps Katy has one that looks like an extra nipple which itches every now & then & she will scratch until it bleeds! It then settles back down. See if you can post a photo

It doesn't look like anything menacing to me tbh but I'm not a vet. If your vet isn't showing concern & has inspected it I'm sure it will be fine Lets us know the results