The mother-to-be may experience headaches and dizziness due to fluctuating hormone levels after ovulation. Mild pre-syncope may also form, which is considered a common and early symptom of pregnancy. Sensitivity and taste sensations may change: cravings or aversions to certain tastes and smells of food develop. It is also possible to feel constant hunger or satiety, changes in appetite.
An increase in hCG levels after implantation can make the breasts more sensitive, tight and swollen literally after one or two weeks from conception. Other symptoms a woman may experience a couple of weeks after ovulation include tingling and discomfort around the nipples.
Gradually, the level of progesterone rises, regulates mood and causes drowsiness during the day. This, in turn, can create a feeling of weakness or fatigue.