Am I pregnant or is it an effect of the pill?

I've been taking birth control for about 4 months and I recently got married (June 18). My husband and I have always had unprotected sex. I've been seeing weird symptoms since I've been married (I was a virgin before I was married). My nose has been really sensitive and I've been moodier than normal. I've had to use the bathroom a lot more often than normal and I have been craving special K for about a week. I'm eating more too. Please help!