My husband and I have been trying to conceive for approximately a year now. We are both 23 years old. I usually have a regular 33-34 day cycle. 3 days past my approx. ovulation date, I began spotting and cramping, I was still about 9 days before I should have started my period. I am now 9 days late and have not started my period. I am experiencing headaches, nausea at night and sometimes after I eat, gas, extreme bloating, back pain, and my breasts are tender, but only on the sides. I have random shooting pains in my sides periodically. My bloating seems worse in the afternoon and at night. I took a hpt at 5 days late and it was negative. I have an appt. on the 11th with an OBGYN but was curious as to what my chances could be of having a false negative test? Also, what tests or questions should I inquire about with my dr?