When do you first get pregnancy symptoms?

Pregnancy symptoms don't start until after implantation, which is at least a week, sometimes almost two weeks after the egg is fertilized. Then it can take a week or so for the level of hcg to get high enough to start producing the other hormonal changes that cause things like morning sickness, breast tenderness, etc.

With my third pregnancy breast tenderness and tiredness started about a week after I ovulated, but I knew exactly when I got pregnant so those may have been somewhat psychosomatic. Morning sickness started at about 6 weeks both times I had it.