I feel guilty

I feel really guilty right now. I'm 25 weeks pregnant with my second child and I feel awful. I barely fit into anything and what I do fit into I feel like I look awful in. My sister in law is about to get engaged and we have been looking at wedding rings, dresses and venues lately and I can't help but feel so jealous.. she's so beautiful and has so many new adventures ahead while I'm here feeling like my adventures and new experiences are over. I'm just a mom now.. I feel so awful saying that because I know so many amazing things come along with that, but the selfish part of me misses it just being me and my husband and the adventures and experiences we had together. I feel like I've lost myself. I know a lot of this is the pregnancy hormones, but I can't stop myself from feeling this way. Anyone else in the same boat?