I think you should deffinitly join a play group! What a great way to meet other moms and a way for you little ones to meet other kids. My first thought when I read yoru post was that it would be a great way for you to educate others on adoption and raising twins. It never crossed my mind that you would not be an out cast
You are a mom just like the rest of them that goes through the same things everyday just double time!
I am an identical twin (as I saw you were too on your blog!), so I know in your twins minds they are just normal kids-as I never felt like I was any different from other kids, being a twin was just the norm. I know yours are a little younger (and cuties!), but as they grow they will love you for the fact that they know other kids other than each other!
I nannied for triplets back on college and I took them to a play date, and it was a blast! Maybe you could even start one yourself