Trying to keep it together around friends

Today was tough, we had a large group play date/birthday party with friends. We all have kids within a month of age together turning 3. One set of parents has a baby and another Mom is pregnant. A Dad kept making a few comments to me and my husband about us being “next” and having “twins” and “oh soon you will be pushing a double stroller”. Only one friend in the group knows we miscarried last month and have been trying for a year. It was so tough not to say something rude, but I know he doesn’t know or understand 😕