I been feeling really moody lately, and my nipples are sore but I still didn't get my period/missed it. I had last month on the 12th, the clue app I have said it was either suppose to be yesterday or today but I didn't happen at all. Now I'm just confused, and no I am not pregnant cause haven't been having sex. Any ideas? Yes i will be going to doctor on the 15th just wondering if anyone had any opinions on it.