Crying over everything😤😤😤

Anyone else have an 18 month old crying for anything and everything? She throws fits when she can’t get what she wants (normal), but she’ll also cry and throw fits for things I don’t even understand. In example, her sister had a book that of course she wanted 🙄, so I asked them to bring it to me and I’ll read it, basically to avoid a tantrum for not getting what she wants. Well, she says “ok,” so her sister and herself get up on the couch, I start reading and FIT!!! Like if the sequence of events don’t happen exactly like SHE wants, she will scream and cry, if that makes any sense. Any other mamas dealing with this? I’m due in April with another, so I’m hoping it passes but it seems it’s getting worse 🤷‍♀️