Can someone please look at my Chart and tell me how someone goes past 17-18 DPO and NOT be pregnant? My DPO NEVER gone past 14 unless I was pregnant. I started a light pink/brown CM spotting yesterday, today I'm cramping like my periods coming. Is it an actual period or could I have been pregnant but now losing it? I tested on 16 DPO and it was negative but the test was 2 months expired (Dollar Tree test). I was going to ask my SIL but she's in her 2WW (3 rd round of IUI) so I didn't want to upset her. We weren't TTC but I was secretly hoping to have been pregnant. Our only method of BC is the pull out method (YES I know its not 100% effective). I'm bummed and feel like crying.