Good morning, everyone.
First, ((HUGS)) for you. Second, congratulations! Third, as long as you are happy and excited it really doesn't matter what anyone else thinks or does. This is your baby and your pregnancy and you have every right to do what you (and your DH) want. In this day and age, anything goes. Heck, throw your own shower!
I don't think it is your family's place to tell you what to do and how to do it. But I do realize this must be a really hard situation to be in - you want their love and support, but all you seem to get is judgment. Have you told them how their comments and actions make you feel? I know confronting this with them may be difficult, but it may be the best solution. Sometimes people don't even realize that what they are doing is hurtful.
Please stick around and post updates! I'm glad to hear you've had a smooth pregnancy so far, and I would love to hear how it continues to go!