I have been TTC for 9 months now and I haven't even seen the faintest of faint lines on a pregnancy test. I don't even know what to do anymore. I cry all the time. I really thought this was the month because I have nausea and sore nipples and back pain and dizziness and headaches but AF is due tomorrow at 13-14 DPO and all the pregnancy tests say negative. Can I give up now?