what to do??

[SAgirl]

editted for privacy

[RunningWithScissors]

Its tricky! Personally, I wouldn't think much of it, she sounds like a typical young girl to me from what you have described, and your DH sounds just lovely
But if it's making you uncomfortable for any reason I think your DH should at least take that into consideration, especially while you are pregnant, hormonal and feeling vulnerable! Its not as if you are flying off the handle and accusing him of a wild affair!. And you aren't asking for him to completely ignore her, tell her to back off or being mean to her. I think its a perfectly reasonable request for you to ask of him

[RunningWithScissors]

It's easy to say 'try not to let it bother you", and honestly that saying drives me crazy! Everyone can say it when they are on the outside looking in, but when you are in the middle, its a different story
Try to talk to DH again, explain that you are trying hard to not fell this way, but it is starting to really bother you. You don't need this stress while pregnant!

I'm trying to come up with something you could say to her, but I'm not sure what! More

[SAgirl]

I wish there was something I could say to her, but I have no idea what... I'm not good with things like that, and especially spur of the moment type things. I am far too polite to say what I really feel

[lovemybabies!]

I get why you would want to say something, but, personally I wouldn't. She will just know that she has got to you and that you feel insecure, it seems to give her more power. I would just tell your DH again how it makes you feel. Maybe try telling him another way, he may not have totally understood last time. (That doesn't sound right But I know sometimes my DG doesn't get how hurt I am feeling and I have to try tell him a different way for him to actually understand) hope that makes sense