Can your engagement ring be your wedding ring?

Is it ok to have just ONE RING as your Wedding & Engagement ring?! So at your wedding, instead of receiving another ring/band you just use your Engagement Ring to be put on your finger at the ceremony? The reason why I ask this is because I have NEVER been a fan of jewelry to begin with and NEVER wore rings until I got engaged. Even after being engaged it has been hard to wear my ring (I just don't like things on my hand) and I only wear it when I leave the house on special occasions or anytime I'm with my fiance. It may sound funny but I actually have a bit of Jewelry/metal phobia. So since there is no way I'll be comfortable wearing two rings, can I just make my engagement ring my wedding ring?

The answer is yes: wear what makes you comfortable.