I need hope or some tough love

Br
very discouraged. I took pregnancy test on days 10, 9, 8, 7 dpo. all four negative. last two had evap hours after test. 
I felt so pregnant this month. cramps for two days, nausea, digestion issues, mild fainting spell... I was 100% sure I was pregnant. 
could there still be a chance? AF due in two days.