pregnancy symptoms?

Is an increased appetite a symptom of pregnancy? My appetite boosted out of nowhere. I usually don't have seconds and now I am. It's been this way almost a week now. I'm forever hungry and because of it I gained about 8 pounds in a week. My appetite is usually extremely small but I seriously feel like I can't get enough of eating. And I'm a really thin person and I mean THIN, teeny tiny. Also my boyfriend has noticed some bloating that I didn't pay attention to, I do always bloat after eating but when he notice it I haven't ate in hours. Now I want to do it lay in bed and sleep.