Some women get little twinges of nausea about 10 days after conception. However, it has been my experience that true pregnancy symptoms are felt at about the sixth or seventh week of pregnancy. The Pre-menstrual symptoms could be pregnancy related or they could be the extra progesterone in your system that is released after an ovulation occurs. Only a positive pregnancy test will tell you if you are pregnant. Then it is a couple weeks before the fatigue and nausea set in. :) I am seven weeks now and boy has it just hit!! GL what ever you desire.
It varies. About 7-28 days after having sex.