Sheri,
I don't know if my advice is relevant to your situation, you lost Mary Catherine so much later in your PG, than my m/c. That type of loss is much more heart-wrenching.
I would tell your parents and family, they are great support. God-forbid if something were to happen, they'd WANT to be there for you and DH. Plus with telling them now, you'll have even more people praying for your little one
**For me*** I found that being PG by the time my m/c anniversary came around was certainly a blessing. I still had an emotional day, but it could have been worse. Take the day off of work if you work.
I still have those times were I think.. "I should have a one-year-old by now etc. I remind myself if I hadn't m/c, I wouldn't have my son now. While my first baby certainly would have been wonderful, I just can't imagine my life without my DS. Your daughter did the same thing, she gave the ultimate sacrifice by giving her life so that you could have this baby. She would want you enjoy this time in your life.
Lastly, try not to compare this pregancy to your last ones, you'll drive yourself nuts. It hard not to do.
See you over on the mommy board soon. (BTW, Feb is a great month for a baby, they are at a fun age for the summer, plus they are on a better schedule!).
Kim