I'd wait a little longer and take a test. Honestly, none of us are really ready for a baby, but it is the most beautiful thing in the world. Good luck.
My cycles are almost always spot on. I've been able to track them for the last year. I want it but I don't want it now. It's just not good timing with everything going on. If we were just remodeling the house I'd be okay with possibly getting pregnant but remodeling, moving and a new puppy, not sure I can take that much on.
We tried for a year before successfully conceiving and I think 3 of those months I was late, for one cycle I was 2 weeks late. You could be pregnant, you could just have an irregular cycle or you could be late because of mental state - this was my case. Because I wanted it to happen SO bad, my hormone levels were all over the place which caused my late cycles.
There isn't any way you can tell if your pregnant or just late unless you take a test. Because even if your not pregnant and really want it to happen, you could just be having mock symptoms.
Taking a test is pretty much the only way to know for sure.
I was 8 days late and I just ended up ovulating late so my period came 8 days late I thought I was pregnant sore back etc but just turned out to be my period late I had a miscarriage in November 2014 and it's messed with my cycles but also trying for a baby