Should I worry?

I was in the shower and found what i thought to be a small lump on one of my breasts. I don't even know if its a lump or just normal. I haven't been checking recently due to being busy with work. However i have told my boyfriend and he is desperate for me to get it checked but i just don't see the point. I feel fine, its small, its not sore or anything. I would rather not have some doctor touching/looking at my boobs if i don't have to
Should I worry?
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