35th day in cycle, no AF, no BFP..help?!

Sa
I am 30. Was on BCP 15yrs. Off 3mo to beginning TTC with my husband. Always regular AF 28 days on BCP of course. First month off 28 day cycle, 2nd month off 32 day cycle, now 3rd month 35 days...no AF, no BFP. What's happening? :(