It might be normal as your body is adapting to the hormonal changes. But just in case I'd take a pregnancy test just to be sure.
Best of luck
Have to agree with lissy1978. You may just be adapting but what you're describing can also be symptoms of pregnancy. Your period is late enough that a urine test should be accurate. I would do one to find out for sure.
Where can I get a pregnancy test from?
Almost any store should carry them. Walmart, Walgreens, drug stores, Krogers, etc.
They also carry them at the dollar store (the store that only sell items for $1) And I have used them many times they do work.
Keep us posted