How soon can you get pregnant after implanon removal?

I've read it can take a year for your menstrual cycle to return to normal after removing Implanon. It also varies for different women considering age and hormones. I had mine removed on January 27, 2012 (a little over a month). I spotted a week before removing it, I don't know if you'll consider that as a normal cycle. Two weeks after removing it, I spotted once and noticed a brown mucous discharge for two days but only after wiping. We are wanting a 2nd baby but not stressing too much about it. I'm thinking if we want another baby, it has to happen before I'm 33; I'm 31 now. Im anxious to know if I'm pregnant during the first month because I drink a few beers on weekends and I take digital x-rays and work with nitrous oxide. I've taken about 4 pregnancy tests- all negative. I turned the answer to this question into a blog but I figured it'll be useful to some of you. Thanks or reading and Good Luck to you if you're trying conceive.