Quoting zombie.:" I have this overwhelming feeling that Im just going to end up losing this baby too. I need positive thoughts."
Sending you lots of good/sticky vibes. It really sounds like you've got a good grip of what to expect with this one, and have done everything in your power to ensure a healthy pregnancy.
Just meditate for a few minutes a day, or spend some time clearing your thoughts and focusing lots of good energy on your belly. Also, what i find when I'm stressed is that I make a conscious effort to clear all negative/bad thoughts from my brain... So every time I catch myself thinking something bad or feeling bad I purposefully redirect my attention to something else.