I'm so uneducated

Hi everyone! My name is Jaci, and I'm a little concerned about myself because recently, strange things have been happening to me. I got my first period in the middle of seventh grade, and things have been on/off irregular ever since. I'm in tenth grade now. I missed my period this month, which I wasn't really surprised, but I've been dealing with many of the symptoms since before I was supposed to start this month... as of last night, I've had pain while peeing, and it's beginning to freak me out a little bit, haha. I'm not the type to be open about these kind of things, so please don't make fun of me lol. Should I be worried??