You may have a vaginal cyst.
Vaginal cysts are small sacs located within the vagina and under the vaginal wall. These cysts contain fluid or semisolid material and they can occur from trauma to the vagina or when a gland or duct is clogged. Vaginal cysts are usually painless, round lumps and quite often, women do not experience any symptoms at all. However, some women do experience discomfort from vaginal cysts, but they are able to get relief with proper treatment and medical attention.

I get these raised hard bumps every so often...With me, they are not glands...Don't sqeeze them...They come and go away...I also get blood blisters...I wear these with glowing pride...These are my "red badge of courage" for having children....

Caroline