Feeling so sad!

Anybody else having stupid mood swings? I had very little issues with this early in pregnancy but as soon as I hit 30 weeks I have felt like crying...since I woke up this morning I've wanted to cry. I'm been visiting my mom and brother 3 hours from where I live and hubby stayed at home to work this week so I'm missing him. My SIL had her baby today and im excited for her but it made me feel really jealous for some reason. And I am realizing the longer I'm at my mom's how much I miss her being so far away and im so happy to be able to be here and everybody just went to bed so I'm sitting in my old room bawling in the dark...I just want to feel better 😭