Have you missed a period? you need to wait until youve missed one untill it shows up on the tests, although i think theyre may be one where you dont have to wait now. also morning sickness, is apparently, a fairly constant thing for a lot of pregnany women, it doesnt just happen in the morning, but throughout the day as well, so i really wouldnt worry.
if it carries on for more than a couple of weeks, id go and see your gp, just to be sure theres not anything wrong.