Not bad advice, that — stay away from Google. :)
The cramps you describe don't really sound like early pregnancy cramps to me, but every woman is different. The early signs of pregnancy you really want to be on the lookout for are:
* Nausea and vomiting
* Constant fatigue
* Mood swings/being overly emotional
* Needing to pee much more often
* Sore breasts
And the crown jewel, a missed period, of course.
It is possible to experience some or all of these signs about a week after conception, but it usually takes a little longer, more like two weeks.
I know this was quite a while ago but i was wondering if you were pregnant, i have similar symptons?