I don't see anything obvious, but give it a few more days. With this pregnancy, I felt horrible from 6dpo, nauseous, headaches, irritable. I was sure I had to be pregnant as it was exactly how I felt with my daughter. I waited til 10dpo to take a test and it was as negative as could be (even holding it up to the light, nothing!). I was sure I must just be imagining how I felt. It carried on through the weekend and by the next week I felt really bad at work, so bad, I left early one day. I took another test the following morning at 16dpo and it was a strong positive. Sometimes your body knows even when it's too soon to get a positive test, but hang in there and see what happens in a few more days. Do you know how many dpo you are?