I have a bump on my left labia minora, & it is red and painful. there is also 2 more tiny red bumps but with no pain on both sides.what could they be?

Inflamed cyst: most likely this is inflamed bartholien cyst. You can apply a heat pad but you would need to see a physician for some oral antibiotics.

In grown hair?: There are several causes for the bumps on labia. For a proper diagnosis, you should be examined sooner than later to treat for any infection. Pl see attched for some general info on labial conditions. Feel good!