First off, welcome to veggie boards!
Yeah, if the yellow continues, I'd have it checked out. It's not a normal effect of vegetarianism, and while it could be nothing (and likely IS nothing if it goes away), it could be serious, like a liver problem.
Originally Posted by Lethargic
I am just worried it is not, although I really am unsure if my skin is yellowish at all. Is that something common in most vegetarians? I am eating cheese and peanut butter for protein daily, so that should be enough right?
I wouldn't rely on cheese and peanut butter for protein. Yes, you can get protein there, but you ought to try eating different kinds of beans and such. Beans, seeds, nuts, legumes, and grains are all great sources of protein (fruits and veggies have some, too), and that way you can get a wide variety of amino acids (which your body will combine to make into proteins). Relying on just one or two foods isn't a good idea because foods have different amounts of amino acids, and you might not be getting enough of certain ones.
That said, it's very easy to get protein - it's in everything we eat! If you eat lots of different foods - nuts, seeds, beans, seeds, legumes, fruits and veggies of many colors, grains, dairy and eggs - you should have no problem getting all the protein you need.