I've always had pretty regular cycles and this month has been whack. Today is 42 days since the first day of my last period and still no positive pregnancy test. Took one when I was supposed to start and have taken one every few days since. I have been off bc for around 4 months. Is this normal and has anyone experienced this before? No sign of a period like normal and no spotting at all. How long should I wait before going to the Dr? My mom and his mom do not know we are trying to conceive so we don't feel we should ask incase it's something else.