Ugh Hormones

Does anyone else get random Bursts of extreme sadness? It seems like for the past couple of weeks (I'm 21w) I get outbursts of uncontrollable sobbing.  It can be over anything. Sometimes I feel rejected by my husband and unloved but I know that neither are true. And today I was watching birth videos on YouTube, usually it scares the crap out of me but today I cried because I just want to meet my baby already.