1 year suddenly started crying

My daughter just turned 1, no shots yet, but she has started to cry over the smallest things. I am not sure what is going on. It seems like she is getting mad when she can't have things the way she wants, but she wasn't like this yesterday. I am just trying to figure out if this is a stage or if she is sick. I'm cuddling with her and trying to help her, but just checking if tantrums are a phase for 1 year olds. No fever or anything, I'm just trying to figure out what is wrong 😥 Help please?!