hi there, so I'm 22 years old and I have a huge case of health anxiety when it comes to cancer as I'm sure we all do but given my age, it's quite bad that I am worried about this so constantly because although I know it's all rare, my mind makes me believe I can be that rarity. Anyway, lately, I noticed when running my hand down my shin (right next to my shin bone and over the muscle area) that there is a slight bump, not a lump per se but more when I run my hand down it goes up ever so slightly. It isn't noticeable as lumps can be it's just more so when I touch it I feel a slight rise. This is on my left leg, on my right leg I feel for the same thing to just ease my mind that it's the shape of my legs/muscle/bone and there is also a slight rise there too however it's not as large as the left one if that makes sense? 

obviously googling is always a bad idea and a bad habit that I have but my brain just keeps telling me that it's some form of possible bone cancer and I've essentially gotten myself all worked up. it's hard to explain but it isn't a lump and more just a small rise? any input? I'm paranoid that I am just making something out of nothing and it's in fact completely normal and just part of the body but I'm also worrying myself that I'm wrong and it's something serious.