So confused

My husband and I tried to conceive for the first time last month using an ovulation predictor. We definitely got in in during ovulation. I started cramping very early on and then I started having mild nausea and fatigue and peeing like crazy. My period did not come on at all for the month of December I was due to flow on 12/26 so at this point I’m over a week past due for my cycle. I have gotten 5 negative home pregnancy tests and a negative blood test from my doctors office but still no period and still having crazy symptoms I’m so confused