Hi, I'm 26 years old and here is my concern, I havent had sex for like 8 months and I started a new relationship now and we got intimate. the thing is that now i'm 13 days late and been having abdominal and back pain, headaches, lightheaded and also I've been feeling a little sleepy all the time.. I've always been regular always never been late and never these many days... My question is can I be late because I started having sex, because the changes of the hormones in my body because I started haveng sex again??? Please help... Thank You!!!! ?