E.:
Every W. and EVERY pregnancy is different.
With my first pregnancy - I was sicker than a dog for 4 months - the smell of tuna made me vomit (not an exaggeration)
Second pregnancy? LOVED LIFE - could eat ANYTHING and EVERYTHING without fear of running to the bathroom - craved Edy's Rocky Road ice cream - HAD to be Edy's could NOT be ANYTHING else.
With that being said - the fact that you know you are pregnant at two weeks is just incredible! Most women don't find out until they are at least 5 to 6 weeks.
I would say to go with what your body tells you, get plenty of sleep and exercise and truly - do NOT listen to horror stories about child birth - that will stress you out and stress just doesn't work on a pregnant W..
You will feel pressure and cramping - but again - it is different for every W. and every pregnancy - some women have spotting, the cramping is from the uterus expanding as is the pressure. Your breasts will most likely start feeling sore as they grow too (keep in mind some women's breasts don't expand until AFTER the baby is born). your body will be going through a ton of changes.
CONGRATULATIONS!!