There are several distinct possibilities here. You will need to see your primary care doctor
, however, to confirm a diagnosis.
First, there is the possibility of warts
. Anogenital warts are caused by the human papilloma virus, and they are a very common form of sexually transmitted infection. They cause fleshy, dry outgrowths of skin that can be few in number or quite numerous. It is important to identify anogenital warts because they can be removed if they are cosmetically a problem and also because of the risk that the human papilloma virus carries for cervical and anal cancer later in life.
Another possibility would be hemorrhoids
. These are veins from inside the anus that occasionally prolapse outside, usually due to straining and chronic constipation. Hemorrhoids are often itching and may be intermittently inflammed and painful. They also can be treated, either through topical medications or, in severe cases, with surgical removal.
Finally, skin tags are small outgrowths of skin that occur in areas of friction such as the groin, armpits, and between the buttocks. They are benign but they can be removed if they are bothersome.
Talk to your primary care doctor, who will be able to identify what the bumps are and recommend treatments.