Feeling down(excuse the venting)

I'm starting to feel self conscious as my baby shower is this Sunday and I've ordered 3 dresses over a span of a month to wear to it and now none of them fit :( me and my sister went to many different stores and tried on what seemed like a million different things. Nothing. (Mind you I wear the same sundress EVERYDAY because I live in Vegas and its 110 here) I've gained 60 pounds and I'm 31 weeks, my doctor says it's not ideal but there is nothing wrong with me or baby. I feel almost guilty for crying over the way I look. I miss my own clothes and I hate feeling this selfish almost makes me more upset. My SO constantly grabs onto extra parts of me (he thinks he's being cheeky and cute) and my mom is in town and won't stop pointing out my cellulite. I'm ready to start feeling like myself again :( sorry for the rant just late night thinking too much at its finest!