hi, I have a knot on the right side of my Vigaina on the outside and it's been there for about 3 months and hasn't gone down at all, it's about pea sized and bruised a little, I know for a fact it's not an std because I just went to the doctor 3 1/2 months ago for a check up and to get on Birth control and they went ahead and my dr.'s office does a test to see if you have any type of STD