Are these the symptoms?

Ok so I think my hormones might be imbalanced or something because starting a month ago at my last PMS time I got bad mood swings, crying more than what is usual, some depression about life, and unsureness all of a sudden about my relationship. I'm a pretty positive person most of the time which adds to the stress of this. And just today I noticed I have some spotting and it is like 2 weeks before my period ( which is usually very regular) during this month I started having oral sex, I had strep throat, and was on antibiotics. Could of any of this added to it? I'm sixteen and worried about this and how it has changed my thinking, positivity, and anxiety. Does it sound like hormones? Am I normal? If u have anything to add, please tell me below

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