AF due 11/19 and going crazy!!

Gloricel
So I been feeling cramps like period for the last 3 days, light headed, lower back pain, nausea, tiredness and super moody for at least 5 days. I took a pregnancy test this morning because I couldn't wait any longer but it was a BFN I'm so confused did I test too early ? HELP!   Had sex on my ovulation days and I saw the egg white secretion the first day! My las period was 10/21