Almost like clockwork, my wife and I inseminated the night before and of ovulation (tracked my cycle for over a year). Around the time implantation would have occurred I got mild menstrual cramping and back pain for 3 days. Since then it's been on and off cramping and back pain, some hot flashes when I drink coffee, cervix position is just like during ovulation, CM has been like lotion and recently got all kinds of stretchy and volume has increased. I'm scheduled to start my period today and yet the test is still negative!! Thankfully I have none of my usual PMS symptoms...With my first I had none of these symptoms (she's 6 now).

Last period started May 14th.