Hi, I missed my period recently. My last period was 12/24/13. Sometimes I get my period in 28 days and other times it could be 35 days. But this is the longest I ve gone without it. I ve had very light stomach cramping, mild head aches, dizziness while standing for long periods of time, nausea, sore beasts, fatigue, and the past few days I ve had a sore throat, runny nose, vomiting, and diarrhea. I went to my doctor yesterday and was diagnosed with an upper respiratory infection. I also took a urine and blood test for pregnancy, which both were negative. I m just very concerned with what is going on with me. Any ideas?