Bump in the front left side of my inner wall?

I would get checked asap, but that's just me, once I know something is there and I can't figure it out I want to know asap! Do you shave? My friend once had a bump on her inner lip that we thought was an STD but it turned out to be an ingrown hair! So it could be a number of things, but if it was me I would get checked out sooner rather than later. That way if it is an STD or infection it can be treated and cleared up right away a lot of damage can be done if waiting longer.