Hello, so when I was younger my periods were a little all over the place in terms of when I'd get them. Luckily, that started to even out a bit as I got older until this past year. Now I've noticed they're becoming more and more irregular and this month it's 9 days late so far. I know it's not pregnancy, but I have become more sexually active for the first time in about 2 years. I'm only 21. I do stress a lot though so that could be it. Any other suggestions of what this could be or what to do? Thank you.