Those are all possibly pregnancy symptoms but also symptoms of low blood sugar, PMS, the flu...and on and on. The only way to confirm that they are actually pregnancy related is to get a positive test result. Its easy for all of us to speculate but no-one can tell you for certain. I knew the day I got pregnant with my daughter but in subsequent pregnancies did not know a thing...
Hang in there and soon enough you will be able to test and get a difinitive answer.
I'm happy to comiserate with you during your 2ww though as I am there myself.
