Hi M.--
I also have a 21 month old daughter who is pretty happy-go-lucky and goofy most of the time, but she is also very sensitive and can be quite intense on both extremes. Though we havent had the experience that you are having with daddy (he works from home and I work part time, so we are both with her most of the day) she is also doing some of that weird freak-out stuff over very minor things. Sometimes she gets upset when we are getting ready to leave the house, and then sometimes she gets upset (and whines "no home!") when she sees that we are pulling into our driveway after being out. I cannot say this for sure, but I think i have read somewhere that it is pretty common for toddlers to go through a phase where they have trouble with "transitions"--ie. going outside, coming inside,changing activities, and maybe in your case, your little one is having a transition crisis when she goes from mom all day long to adding dad to the mix. I am right there with you so I cant tell you how long this phase will last, but i am hopeful (and pretty sure of it) that it is a phase that they will grow out of. How is she on weekends or times that her dad is around all day? Maybe giving them a day together (if it's possible) would help ease the hurt your husband may be feeling (plus give you a little time to yourself!). I know that if I am around, my daughter is all about me, but if I leave, she is totally fine and loves being with her dad. Good luck with the new baby on the way! I am sure that even if she does lose her mind at first at this new addition who is going to throw her world in a tizzy, she will soon get used to it and will embrace her new brother or sister...Good luck, take care and hang in there!