Am I near my period?

So I'm new to my period this is my first year (I'm talking like I'm a newborn 😂) anyway I've gotten used to my period arriving anytime near the 17th or the 20th of the month , even though it can be irregular mostly it falls in between these times. I just don't ever feel prepared because I feel like I don't have pms ? Or maybe I am I just throw it off as the "usual" well this past two weeks my legs have been sore , just where my stomach ends and my hips begin in the middle (where my utures is I guess) I feel sore, not achey or pokey or stingy. Just sore and my face breaks out and I'm having mad cravings . Are these normal day to day teen things or pms? I probably sound dumb but this is a legitimate concern .