15 days late

Soooo in a nutshell, I am 15 days late. My cycles are almost perfect 28-day cycles....the last few being 29-day cycles. I am currently on cycle day 43. After my most recent period, 11 days after being done bleeding...I spotted for 5 days. I'm not stressed, or thinking about this continuously, but in the last few days I have been more concious of what I'm doing daily. Like NOT drinking alcohol at all, not like I've ever drank a lot, but being 15 days late makes you think! Eating better, drinking more water, and sleeping a full 8+ hours each night. I've told my long-term boyfriend, and he shares my same thoughts. He said WE should test at the end of November...in case my hormones are messed up or something crazy, and if AF is still not here by then, then more than likely WE are pregnant. My CM has been creamy white, and A LOT more has been produced than there usually is. I don't have morning sickness. Boobs aren't sore, but I do feel like they are slightly larger. I've had more frequent headaches the past few weeks. Other than that, no symptoms. I'm thankful he's understanding, and saying WE rather than I (as in me, by myself being pregnant). Has anyone else had a similar "lateness"? How late did you wait to test? Were you actually pregnant?