I had my period on 14/04/17, my cycles vary between 27-33 days. I was due to ovulate on 30/04/17, I had milky discharge the whole week. On cycle day 20 I had a massive lump of egg white mucus and then I took two three ovulation tests. Two confirmed fertility, one was negative. I had sex on my cycle days 18 and 20. Can someone just help me out as to why I only had a surge of mucus for one day.