Dealing with losing friends

Since I've become pregnant, I'm noticing a shift with my friends.  I'm not invited out like I used to be, they don't text me as often, and I'm feeling really alone because I'm going through such a big change that they don't understand.  I know I can't drink, but I still would like to hang out or at least be invited.  Sorry if this is depressing, I just wanted to know if anyone else was feeling similarly, especially if none of their friends are pregnant or have kids.