Missed period??

Jessica
Hello! First time posting, looking for advice. Went off BC in March, started ttc in May. First 2 months BFN's. LMP was 7/6 and since going off BC, my cycles average 31-32 days. Should have had AF last weekend and she never showed. No spotting, minimal cramping and BFN test this morning. I'm thinking not pregnant this month, but I have never ever missed AF. Even in the past going off BC or switching kinds, she always shows. I'm just very confused. I'm going to test again Monday, but in the meantime looking for any advice. Thank you.