Some of the symptoms of ovulation and pregnancy can be very similar. You may experience cramping and abdominal pains in both cases, as well as elevated body temperature, fatigue, and food cravings or aversions. However, with pregnancy, each of these symptoms is typically more intense and likely to last much longer. There are also several symptoms unique to pregnancy that you don't experience during ovulation like a missed period, implantation bleeding, vaginal discharge, and breast changes in the areola size and shape.