I found a white bump on the outer part of my eyeball about two weeks ago. it is painless but sensitive and causes the area to be bloodshot.

Pinguecula: This most like a pingueculum on the white part of the eye which when dry or irritated can become red and irritated. Use over the counter tears 6 times a day for the next week and this should improve.

Pinguecula: Sounds like a pinguecula, which is a deposit/build up on the white part of the eye (sclera) due to uv light and dryness of the eyes. You can use artificial tears, and use a cap and/or sunglasses when outdoors.