Same here! Now I'm 18w4d so excited but scared at the same time. It will go by fast once you hit 11w it did for me I thought it was going to be forever now it's flying by.. Goodluck and congrats on being mommy:)
I agree, there's a good chance you're going to make it to term, try not to stress, and not think about it (easier said than done, I know) it really is out of your hands, you'll get through it and before you know it you'll be finding out the gender and then labor and holding him/her! :)
Try to keep busy. The first 12 weeks are always hard but even harder after loosing one before. Every day the risk level goes down so try to concentrate on the days you've already got through. Chances are really good for you now. Big congrats and enjoy every moment.