What Causes Cluster Of Bumps Inside The Vagina?

I am a 55 yr old menopausal woman since age 50. The last few months of intercourse I've noticed that at penis insertion, it just didn't feel right. Like something was blocking the way but not painful. It would only take a few seconds and then it would feel normal. Last evening while shaving I noticed that right inside the vagina it looks like a cluster of tissue balls. Most about the size and shape of a large kernnal of corn. One is the size of a grape. Is this a normal thing with menopause or could something else be going on?