HELP! Confusing Symptoms

Currently cycle day 33 in a consistently 28 day cycle the last ten years. I've been cramping on my left side and belly button for over a week (usually period cramps happen the first day AF comes) which would have been 3/7/2017. My last cycle was 2/6( late at night)-2/10 but I had a horrible flu from 2/3/17-2/13 so I'm not sure if that delayed O but, I'm 4 days late and still getting BFN. Is this normal? Should I take that as an absolute no? Or depending on how late I ovulated could there still be a chance? I did have spotting in the morning after sex some time between 2/21 and 2/28, can't remember the exact day and something just feels off. Usually I know when my period is expected and can feel it getting close. I had RIDICULOUS exhaustion this week and last week, random low cramps that don't feel period related but do come and go, constant watery discharge for a week and a half, and the most uncomfortable and unfamiliar bloating/pressure. Any advice? I know my body and something feels different from the usual period symptoms. I'm NOT TTC and this is really the first time AF has felt this way or been even a day late. No stress or illness. No clue what to do or even if pregnancy is still a possibility after getting BFN. Just want to know what to expect!