Keep your eye on it, it might be the start of an infection, some times they swell so much that there vulva can scrape on the floor /floor material in there living space an if it's not spotless she will get an infection.
I had ferrets for years only ever kept jills never had a problem NOT breeding them or having them jabed
And there will be hundreds of kits available in a couple of months, save yourself a lot of hassle.