Could really use some advice!

I'm feeling very different these days, and having no symptoms of AF. I am 15 days late, even though I'm very regular with my cycles and have never been late and haven't taken a test since Sunday-that was negative.

Friends of mine have told me a couple of them didn't get positives until they were 2 months pregnant and had to get blood work to confirm. Is this common? What was your experience?

I think I'm going thru a similar thing right now and could really use some good advice.