Trying to Conceive Baby #2

So I had my first little guy on August 23rd 2011. We have decided that I'm going off my shot at the end of this month due to the fact it will take awhile for my body to get back to its normal ovulation from the depo provera birth control shot. It only took me 5 months to get pregnant after being on the shot 12 years with my first child. He's my adorable baby boy. So I am technically due for my shot this week into next so no shot for me. I'm a little nervous this time and I wasn't really nervous the last time. No idea why.