I'm going on 26 and my boyfriend and I are are ttc #1....Been trying since 5/14 ...I have a 34-36 day cycle. Have been doing BD every other day and nothing.... Finally I bought a CBEA OPK and it said for me to start testing on CD 14. Today was my 4th day testing CD 18 and still have not gotten a flashing smiley or solid smiley just 4 blanks in a row....I'm starting to get really discouraged, is the 4 days in a row of a blank smiley normal?