I think i'm pregnant, did you have a pattern...?

ok. so i've posted my symptoms on here a few days ago. i really think i'm pregnant. i'm always irregular, but within a certain range. in over a year, i haven't had a cycle over 45-50 days, except one time i found out i was pregnant. i was on CD62 and still no AF and was still getting BFN's. now i'm on CD66, still no AF and still BFN's. even though i'm irregular, this is REALLY irregular compared to my irregular. what do you think? i'm almost positive i'm pregnant, i just can't get the test to show it yet. please help, serious answers only. don't be a jerk just because someone is asking for ADVICE or OPINION, not a well profound definite answer.