Vegetarian craving meat in pregnancy.

I'm currently in my 3rd month of pregnancy with our first baby so all of this is new to me. I've been a vegetarian for over 10 years and recently all I've been craving for food is bacon. I ended up giving in and having a bacon sandwich, which is making me feel so guilty. My normal vegetarian meals just don't give me the same satisfaction anymore. Has anyone else been through this?